From b11084f7290eb8e4febf7a37617aa55719d37835 Mon Sep 17 00:00:00 2001
From: Hou Qi <qi.hou@nxp.com>
Date: Thu, 3 Mar 2022 14:22:10 +0800
Subject: [PATCH] flvmux: Add protection when unref GstFlvMuxPad

This is to avoid gst_object_unref: assertion 'object != NULL' failed.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1843>
---
 subprojects/gst-plugins-good/gst/flv/gstflvmux.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/subprojects/gst-plugins-good/gst/flv/gstflvmux.c b/subprojects/gst-plugins-good/gst/flv/gstflvmux.c
index 6ce6413e5b..cb4db020ea 100644
--- a/subprojects/gst-plugins-good/gst/flv/gstflvmux.c
+++ b/subprojects/gst-plugins-good/gst/flv/gstflvmux.c
@@ -2080,8 +2080,10 @@ gst_flv_mux_aggregate (GstAggregator * aggregator, gboolean timeout)
       gst_buffer_unref (buffer);
       buffer = NULL;
     }
-    gst_object_unref (best);
-    best = NULL;
+    if (best) {
+      gst_object_unref (best);
+      best = NULL;
+    }
   }
 
   if (best) {