core: Set mpctx->chapters to NULL at uninit

The uninit code called talloc_free(mpctx->chapters) but didn't clear
the pointer. As a result playing a file with ordered chapters and one
without almost certainly triggered an abort when closing the second
file. Fix by setting the pointer to NULL after freeing.

1 files changed, 1 insertions, 0 deletions

diff --git a/mplayer.c b/mplayer.c
index 0f2cae6736..4a58b2dcdc 100644
--- a/mplayer.c
+++ b/mplayer.c
@@ -580,6 +580,7 @@ void uninit_player(struct MPContext *mpctx, unsigned int mask){
     mpctx->timeline = NULL;
     mpctx->num_timeline_parts = 0;
     talloc_free(mpctx->chapters);
+    mpctx->chapters = NULL;
     mpctx->num_chapters = 0;
     mpctx->video_offset = 0;
     if(mpctx->demuxer){