Index: lib/util_str.c
===================================================================
--- lib/util_str.c	(revision 5865)
+++ lib/util_str.c	(working copy)
@@ -1334,7 +1334,7 @@
 
 	/* for correctness */
 	if (!findstr[0]) {
-		return src;
+		return (char *)src;
 	}
 
 	/* Samba does single character findstr calls a *lot*. */