Allow app_queue to use MONITOR_EXEC even if MONITOR_OPTIONS is not set. (issue #9495 reported by cduffy)

git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.4@60762 65c4cc65-6c06-0410-ace0-fbb531ad65f3

apps/app_queue.c

@@ -2588,7 +2588,7 @@ static int try_calling(struct queue_ent *qe, const char *options, char *announce
 				}
 
 				if (mixmonapp) {
-					if (!ast_strlen_zero(monitor_exec) && !ast_strlen_zero(monitor_options))
+					if (!ast_strlen_zero(monitor_exec))
 						snprintf(mixmonargs, sizeof(mixmonargs)-1, "%s|b%s|%s", tmpid2, monitor_options, monitor_exec);
 					else
 						snprintf(mixmonargs, sizeof(mixmonargs)-1, "%s|b%s", tmpid2, monitor_options);