Fixed #1159: UPDATE is sent to lock codec even though call is being disconnected

git-svn-id: https://svn.pjsip.org/repos/pjproject/trunk@3371 74dad513-b988-da41-8d7b-12977e46ad98
diff --git a/pjsip/src/pjsua-lib/pjsua_call.c b/pjsip/src/pjsua-lib/pjsua_call.c
index f1705dc..c3ff756 100644
--- a/pjsip/src/pjsua-lib/pjsua_call.c
+++ b/pjsip/src/pjsua-lib/pjsua_call.c
@@ -3079,6 +3079,13 @@
 	return PJ_SUCCESS;
     }
 
+    /* Don't do this if call is disconnecting! */
+    if (call->inv->state > PJSIP_INV_STATE_CONFIRMED ||
+	call->inv->cause >= 200)
+    {
+	return PJ_SUCCESS;
+    }
+
     /* Verify if another SDP negotiation has been completed by comparing
      * the SDP version.
      */