This fix downgrades the ERROR message indicating no res_stun_monitor.conf to a WARNING message.

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@283456 65c4cc65-6c06-0410-ace0-fbb531ad65f3

res/res_stun_monitor.c

@@ -218,7 +218,7 @@ static int load_config(int startup)
 
 	if (!(cfg = ast_config_load2(stun_conf_file, "res_stun_monitor", config_flags)) ||
 		cfg == CONFIG_STATUS_FILEINVALID) {
-		ast_log(LOG_ERROR, "Unable to load config %s\n", stun_conf_file);
+		ast_log(LOG_WARNING, "Unable to load config %s\n", stun_conf_file);
 		return -1;
 	}