From f506097ac74635bf17708d4802ec9adcab61a71f Mon Sep 17 00:00:00 2001
From: William Kendrick <wkendrick@users.sourceforge.net>
Date: Thu, 12 Oct 2006 07:33:53 +0000
Subject: [PATCH] Making strcasestr more friendly.

---
 src/tuxpaint.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/tuxpaint.c b/src/tuxpaint.c
index 442bc7947..45a84a7b5 100644
--- a/src/tuxpaint.c
+++ b/src/tuxpaint.c
@@ -208,7 +208,10 @@ char *strcasestr(const char *haystack, const char *needle)
 
   result = strstr(uphaystack, upneedle);
 
-  return (result - uphaystack + (char *) haystack);
+  if (result != NULL)
+    return (result - uphaystack + (char *) haystack);
+  else
+    return NULL;
 }
 
 #endif