Fix potential crash if p->owner is NULL.

Problem was observed when a call-forwarding loop was accidentally
configured.

ABE-1906

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@208229 65c4cc65-6c06-0410-ace0-fbb531ad65f3

diff --git a/channels/chan_sip.c b/channels/chan_sip.c
index b056a34..b793742 100644 (file)
--- a/channels/chan_sip.c
+++ b/channels/chan_sip.c
@@ -18869,11 +18869,11 @@ static void handle_response(struct sip_pvt *p, int resp, const char *rest, struc
                                case 301: /* Moved permanently */
                                case 302: /* Moved temporarily */
                                case 305: /* Use Proxy */
-                                       {
+                               if (p->owner) {
                                        struct ast_party_redirecting redirecting = {{0,},};
                                        change_redirecting_information(p, req, &redirecting, TRUE);
                                        ast_channel_set_redirecting(p->owner, &redirecting);
-                                       }
+                               }
                                        /* Fall through */
                                case 486: /* Busy here */
                                case 600: /* Busy everywhere */