File escputil-send_nulls-void.patch of Package gutenprint

--- src/escputil/escputil.c.orig	2010-12-11 23:04:07.000000000 +0100
+++ src/escputil/escputil.c	2011-05-17 15:49:52.000000000 +0200
@@ -674,7 +674,7 @@ add_resets(int count)
     }
 }
 
-static int
+static void
 send_nulls(int fd)
 {
   char buf[16384];
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