Fix potential seg

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@985 65c4cc65-6c06-0410-ace0-fbb531ad65f3

diff --git a/channels/chan_sip.c b/channels/chan_sip.c
index a3ff9f1..12d80f5 100755 (executable)
--- a/channels/chan_sip.c
+++ b/channels/chan_sip.c
@@ -3053,7 +3053,8 @@ static int get_destination(struct sip_pvt *p, struct sip_request *oreq)
        req = oreq;
        if (!req)
                req = &p->initreq;
-       strncpy(tmp, req->rlPart2, sizeof(tmp) - 1);
+       if (req->rlPart2)
+               strncpy(tmp, req->rlPart2, sizeof(tmp) - 1);
        c = ditch_braces(tmp);
        if (strncmp(c, "sip:", 4)) {
                ast_log(LOG_WARNING, "Huh?  Not a SIP header (%s)?\n", c);