gentoo-overlay/app-cdr/dvdisaster/files/dvdisaster-0.72.1-libpng15.patch

--- tools/pngio.c
+++ tools/pngio.c
@@ -17,6 +17,8 @@
  *  or direct your browser at http://www.gnu.org.
  */
 
+#include <zlib.h>
+
 #include <errno.h>
 #include <stdio.h>
 #include <stdlib.h>