From 4d34fe7617e44ba6ebd059882dc6a13792dcef02 Mon Sep 17 00:00:00 2001
From: Matthew Waters <matthew@centricular.com>
Date: Tue, 27 Nov 2018 19:25:51 +1100
Subject: [PATCH] webrtc: also check for a null mid to signify an unassociated
 transceiver

We always give our transceivers an mline on creation so that check is
not useful by itself
---
 ext/webrtc/gstwebrtcbin.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/ext/webrtc/gstwebrtcbin.c b/ext/webrtc/gstwebrtcbin.c
index e0411f8618..06c2eb4d4e 100644
--- a/ext/webrtc/gstwebrtcbin.c
+++ b/ext/webrtc/gstwebrtcbin.c
@@ -1222,7 +1222,7 @@ _check_if_negotiation_is_needed (GstWebRTCBin * webrtc)
       const GstSDPMedia *media;
       GstWebRTCRTPTransceiverDirection local_dir, remote_dir;
 
-      if (trans->mline == -1) {
+      if (trans->mline == -1 || trans->mid == NULL) {
         GST_LOG_OBJECT (webrtc, "unassociated transceiver %i %" GST_PTR_FORMAT,
             i, trans);
         return TRUE;