Merged revisions 83637 via svnmerge from

https://origsvn.digium.com/svn/asterisk/branches/1.4

........
r83637 | tilghman | 2007-09-24 10:17:06 -0500 (Mon, 24 Sep 2007) | 3 lines

Making change to group splitting, as discussed on the -dev list.  The main
effect of this will be to permit Set(GROUP([cat])=), i.e. unsetting a group.

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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@83654 65c4cc65-6c06-0410-ace0-fbb531ad65f3

main/app.c

@@ -843,7 +843,7 @@ int ast_app_group_split_group(const char *data, char *group, int group_max, char
 	if (!ast_strlen_zero(grp))
 		ast_copy_string(group, grp, group_max);
 	else
-		res = -1;
+		*group = '\0';
 
 	if (!ast_strlen_zero(cat))
 		ast_copy_string(category, cat, category_max);