From 4bee44007a935adda805dfbb4494fc6502bd216a Mon Sep 17 00:00:00 2001
From: Marton Balint <cus@passwd.hu>
Date: Tue, 31 May 2016 22:48:24 +0200
Subject: [PATCH] avformat/mxfdec: check if source_package is NULL
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Fixes ticket #5554.

Reviewed-by: Tomas Härdin <tomas.hardin@codemill.se>
Signed-off-by: Marton Balint <cus@passwd.hu>
---
 libavformat/mxfdec.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavformat/mxfdec.c b/libavformat/mxfdec.c
index f8cf92283f..9bf676ca67 100644
--- a/libavformat/mxfdec.c
+++ b/libavformat/mxfdec.c
@@ -1914,7 +1914,7 @@ static int mxf_parse_structural_metadata(MXFContext *mxf)
                 break;
             }
         }
-        if (!source_track || !component)
+        if (!source_track || !component || !source_package)
             continue;
 
         if (!(source_track->sequence = mxf_resolve_strong_ref(mxf, &source_track->sequence_ref, Sequence))) {