Index: channels/chan_sip.c
===================================================================
--- channels/chan_sip.c	(revision 319020)
+++ channels/chan_sip.c	(working copy)
@@ -23859,7 +23859,9 @@
 
 	/* At this point, if we have an authpeer (which we have to have to get here) we should unref
 	 * it since if we have actually used it, we have reffed it when p->relatedpeer was set. */
-//	authpeer = unref_peer(authpeer, "unref pointer into (*authpeer)");
+	if (authpeer) {
+		authpeer = unref_peer(authpeer, "unref pointer into (*authpeer)");
+	}
 
 	/* Add subscription for extension state from the PBX core */
 	if (p->subscribed != MWI_NOTIFICATION  && p->subscribed != CALL_COMPLETION && !resubscribe) {