No return on end of void functions.

lib/card.c

@@ -12,8 +12,6 @@ void allocate_card(struct card **card) {
   }
 
   allocate_frame(&((*card)->frame));
-
-  return;
 }
 
 void initialize_card(struct card *card) {
@@ -21,8 +19,6 @@ void initialize_card(struct card *card) {
   card->value = NO_VALUE;
   card->suit = NO_SUIT;
   card->face = NO_FACE;
-
-  return;
 }
 
 struct card *duplicate_card(struct card *card) {
@@ -44,8 +40,6 @@ void free_card(struct card *card) {
     free_frame(card->frame);
   }
   free(card);
-
-  return;
 }
 
 void set_card(struct card *card,
@@ -58,18 +52,12 @@ void set_card(struct card *card,
   card->value = value;
   card->suit = suit;
   card->face = face;
-
-  return;
 }
 
 void expose_card(struct card *card) {
   card->face = EXPOSED;
-
-  return;
 }
 
 void cover_card(struct card *card) {
   card->face = COVERED;
-
-  return;
 }

lib/cursor.c

@@ -13,15 +13,11 @@ void allocate_cursor(struct cursor **cursor) {
     fprintf(stderr, "%s: %s (%s:%d)\n", program_name, strerror(errno), __FILE__, __LINE__ - 1);
     exit(errno);
   }
-
-  return;
 }
 
 void initialize_cursor(struct cursor *cursor) {
   cursor->x = CURSOR_STARTING_X;
   cursor->y = CURSOR_STARTING_Y;
-
-  return;
 }
 
 void move_cursor(struct cursor *cursor, enum movement movement) {
@@ -90,6 +86,4 @@ void move_cursor(struct cursor *cursor, enum movement movement) {
    * on the maneuvre's stacks causes */
   refresh();
   draw_deck(deck);
-
-  return;
 }

lib/deck.c

@@ -26,8 +26,6 @@ void allocate_deck(struct deck **deck) {
   allocate_stack(&((*deck)->maneuvre_4));
   allocate_stack(&((*deck)->maneuvre_5));
   allocate_stack(&((*deck)->maneuvre_6));
-
-  return;
 }
 
 void initialize_deck(struct deck *deck) {
@@ -46,8 +44,6 @@ void initialize_deck(struct deck *deck) {
   initialize_stack(deck->maneuvre_4);
   initialize_stack(deck->maneuvre_5);
   initialize_stack(deck->maneuvre_6);
-
-  return;
 }
 
 void free_deck(struct deck *deck) {
@@ -68,6 +64,4 @@ void free_deck(struct deck *deck) {
     free_stack(deck->maneuvre_6);
   }
   free(deck);
-
-  return;
 }

lib/display.c

@@ -74,8 +74,6 @@ void draw_value(struct card *card) {
             4,
             6 - (strlen(card_value(card->value)) - 1),
             card_value(card->value));
-
-  return;
 }
 
 void draw_suit(struct card *card) {
@@ -93,22 +91,16 @@ void draw_suit(struct card *card) {
   } else {
     wattroff(card->frame->shape, COLOR_PAIR(BLACK_ON_WHITE));
   }
-
-  return;
 }
 
 void draw_front(struct card *card) {
   wbkgd(card->frame->shape, COLOR_PAIR(BLACK_ON_WHITE));
   draw_value(card);
   draw_suit(card);
-
-  return;
 }
 
 void draw_back(struct card *card) {
   wbkgd(card->frame->shape, COLOR_PAIR(WHITE_ON_BLUE));
-
-  return;
 }
 
 void draw_card(struct card *card) {
@@ -119,8 +111,6 @@ void draw_card(struct card *card) {
     draw_back(card);
   }
   wrefresh(card->frame->shape);
-
-  return;
 }
 
 void draw_stack(struct stack *stack) {
@@ -162,18 +152,12 @@ void draw_deck(struct deck *deck) {
   draw_stack(deck->maneuvre_4);
   draw_stack(deck->maneuvre_5);
   draw_stack(deck->maneuvre_6);
-
-  return;
 }
 
 void draw_cursor(struct cursor *cursor) {
   mvaddch(cursor->y, cursor->x, '*');
-
-  return;
 }
 
 void erase_cursor(struct cursor *cursor) {
   mvdelch(cursor->y, cursor->x);
-
-  return;
 }

lib/frame.c

@@ -10,16 +10,12 @@ void allocate_frame(struct frame **frame) {
     fprintf(stderr, "%s: %s (%s:%d)\n", program_name, strerror(errno), __FILE__, __LINE__ - 1);
     exit(errno);
   }
-
-  return;
 }
 
 void initialize_frame(struct frame *frame) {
   frame->shape   = NULL;
   frame->start_y = 0;
   frame->start_x = 0;
-
-  return;
 }
 
 struct frame *duplicate_frame(struct frame *frame) {
@@ -36,8 +32,6 @@ void free_frame(struct frame *frame) {
     delwin(frame->shape);
   }
   free(frame);
-
-  return;
 }
 
 void set_frame(struct frame *frame, int start_y, int start_x) {
@@ -47,6 +41,4 @@ void set_frame(struct frame *frame, int start_y, int start_x) {
                         FRAME_WIDTH,
                         frame->start_y,
                         frame->start_x);
-
-  return;
 }

lib/game.c

@@ -126,8 +126,6 @@ static void set_stacks_initial_coordinates(struct deck *deck) {
   set_frame(deck->maneuvre_6->card->frame,
             MANEUVRE_STARTING_Y,
             MANEUVRE_6_STARTING_X);
-
-  return;
 }
 
 static void fill_deck(struct deck *deck) {
@@ -192,8 +190,6 @@ static void fill_deck(struct deck *deck) {
   for (int i = 0; i < NUMBER_OF_CARDS; i++) {
     push(&(deck->stock), card[i]);
   }
-
-  return;
 }
 
 static void shuffle_deck(struct deck *deck) {
@@ -222,8 +218,6 @@ static void shuffle_deck(struct deck *deck) {
   for (int i = 0; i < NUMBER_OF_CARDS; i++) {
     push(&(deck->stock), stack[i]->card);
   }
-
-  return;
 }
 
 static void deal_cards(struct deck *deck) {
@@ -268,16 +262,12 @@ static void deal_cards(struct deck *deck) {
 
   move_card(&(deck->stock), &(deck->maneuvre_6));
   expose_card(deck->maneuvre_6->card);
-
-  return;
 }
 
 void greet_player() {
   mvprintw(10, 27, "Welcome to tty-solitaire.");
   mvprintw(11, 8, "Move with \u2190\u2191\u2192\u2193 or hjkl. Use the space bar to mark and move cards.");
   mvprintw(12, 19, "Press the space bar to play or q to quit.");
-
-  return;
 }
 
 void initialize_game() {
@@ -300,6 +290,4 @@ void initialize_game() {
 
 void end_game() {
   free_deck(deck);
-
-  return;
 }

lib/stack.c

@@ -13,15 +13,11 @@ void allocate_stack(struct stack **stack) {
   }
 
   allocate_card(&((*stack)->card));
-
-  return;
 }
 
 void initialize_stack(struct stack *stack) {
   initialize_card(stack->card);
   stack->next = NULL;
-
-  return;
 }
 
 struct stack *duplicate_stack(struct stack *stack) {

lib/util.c

@@ -17,20 +17,14 @@ void initialize_curses() {
   init_pair(2, COLOR_RED, COLOR_WHITE);
   init_pair(3, COLOR_WHITE, COLOR_BLUE);
   init_pair(4, COLOR_WHITE, COLOR_GREEN);
-
-  return;
 }
 
 void end_curses() {
   endwin();
   puts("Game finished.");
-
-  return;
 }
 
 void clear_screen() {
   clear();
   refresh();
-
-  return;
 }