Avoid dereferencing NULL pointers.

2011-02-12 01:26:03 -02:00
parent 97c69bdcba
commit 60641ca499
4 changed files with 23 additions and 17 deletions
@@ -29,7 +29,9 @@ void initialize_stack(struct stack *stack) {
 }

 void delete_stack(struct stack *stack) {
-  delete_card(stack->card);
+  if (stack) {
+    delete_card(stack->card);
+  }
  free(stack);

  return;