demux: mkv: fail the segment comparison if a segment UID is NULL

(cherry picked from commit 512bf5750edb3aa8294d71080ce3e39583444835) Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>
videolan · May 29, 2018 · c472668 · c472668
1 parent d2dadb3
commit c472668
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/modules/demux/mkv/matroska_segment.cpp b/modules/demux/mkv/matroska_segment.cpp
@@ -545,6 +545,8 @@ bool matroska_segment_c::CompareSegmentUIDs( const matroska_segment_c * p_item_a
         return false;
 
     p_tmp = static_cast<EbmlBinary *>( p_item_a->p_segment_uid );
+    if ( !p_tmp )
+        return false;
     if ( p_item_b->p_prev_segment_uid != NULL
           && *p_tmp == *p_item_b->p_prev_segment_uid )
         return true;