Fix silly little seg
[asterisk/asterisk.git] / channels / chan_sip.c
index 523ff8e..3d5b823 100755 (executable)
@@ -2421,7 +2421,7 @@ static int sip_register(char *value, int lineno)
                reg->expire = -1;
                reg->timeout =  -1;
                reg->refresh = default_expiry;
-               reg->portno = htons(atoi(porta));
+               reg->portno = porta ? htons(atoi(porta)) : 0;
                reg->callid_valid = 0;
                reg->ocseq = 101;
                ast_mutex_lock(&regl.lock);