Merged revisions 200146 via svnmerge from

https://origsvn.digium.com/svn/asterisk/trunk

........
  r200146 | mmichelson | 2009-06-11 16:17:14 -0500 (Thu, 11 Jun 2009) | 5 lines
  
  Fix a crash due to a potentially NULL p->options.
  
  Thanks to mnicholson for pointing it out.
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git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.6.2@200154 65c4cc65-6c06-0410-ace0-fbb531ad65f3

channels/chan_sip.c

@@ -8749,7 +8749,7 @@ static int reqprep(struct sip_request *req, struct sip_pvt *p, int sipmethod, in
 	 * Similarly, if we need to re-send an INVITE with auth credentials, then we
 	 * need to use the same branch as we did the first time we sent the INVITE.
 	 */
-	if (sipmethod == SIP_CANCEL || (sipmethod == SIP_INVITE && !ast_strlen_zero(p->options->auth))) {
+	if (sipmethod == SIP_CANCEL || (sipmethod == SIP_INVITE && p->options && !ast_strlen_zero(p->options->auth))) {
 		p->branch = p->invite_branch;
 		build_via(p);
 	} else if (newbranch) {