From 412a11b4eacfbfce7f9bcda999d7accc652476ba Mon Sep 17 00:00:00 2001
From: Thomas Bonfort <thomas.bonfort@gmail.com>
Date: Fri, 6 Apr 2012 16:36:46 +0200
Subject: [PATCH] fix segfault in wms error image when no error set

shown in #4266, although unrelated to the underlying issue
---
 maperror.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/maperror.c b/maperror.c
index bb263eed4b..db18a8f030 100644
--- a/maperror.c
+++ b/maperror.c
@@ -403,6 +403,9 @@ void msWriteErrorImage(mapObj *map, char *filename, int blank) {
   colorObj labelcolor, labeloutlinecolor, imagecolor, *imagecolorptr=NULL;
   ls.color = &labelcolor;
   ls.outlinecolor = &labeloutlinecolor;
+  if(!errormsg) {
+     errormsg = msStrdup("No error found sorry. This is likely a bug");
+  }
   
   if (map) {
       if( map->width > 0 && map->height > 0 )