Fix null pointer dereference in app_groupcount.c (bug 1588)

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@2928 65c4cc65-6c06-0410-ace0-fbb531ad65f3
22 years ago · aff78a98cf
parent d2a4408930
commit aff78a98cf
1 changed files with 1 additions and 1 deletions
--- a/apps/app_groupcount.c
+++ b/apps/app_groupcount.c
@ -68,7 +68,7 @@ static int group_get_count(char *group)
 		chan = ast_channel_walk(NULL);
 		while(chan) {
 			test = pbx_builtin_getvar_helper(chan, "GROUP");
-			if (!strcasecmp(test, group))
+			if (test && !strcasecmp(test, group))
 				count++;
 			chan = ast_channel_walk(chan);
 		}