From: Julian Ospald <hasufell@gentoo.org>
Date: Fri Jan  4 17:41:20 UTC 2013
Subject: fix build with clang

--- ace-1.4/lib/make-imglib.c
+++ ace-1.4/lib/make-imglib.c
@@ -202,7 +202,7 @@
   char *rv;
   if (string) {
     next = string;
-    return;
+    return 0;
   }
   while (*next && !isgraph(*next)) next++;
   if (!*next) return 0;