Merge pull request #22 from rvecchio/patch-1

GUAC-570: Solves the issue of blank pages occuring inside generated PDFs having 11 or more pages

src/protocols/rdp/guac_rdpdr/rdpdr_printer.c

@@ -54,6 +54,7 @@ char* const guac_rdpdr_pdf_filter_command[] = {
     "-sOutputFile=-",
     "-c",
     ".setpdfwrite",
+    "-sstdout=/dev/null",
     "-f",
     "-",
     NULL