Merge pull request #1628 from rromrrom/crash_on_empty_string
[sip-router] / src / modules / tm / t_reply.c
index 2f5488a..271932c 100644 (file)
@@ -299,6 +299,7 @@ inline static int update_totag_set(struct cell *t, struct sip_msg *ok)
 
        for (i=t->fwded_totags; i; i=i->next) {
                if (i->tag.len==tag->len
+                               && i->tag.s
                                && memcmp(i->tag.s, tag->s, tag->len) ==0 ){
                        /* to tag already recorded */
                        LM_DBG("to-tag retransmission\n");