avformat/mov: Break out early if chunk_count is 0 in mov_build_index()
authorMichael Niedermayer <michael@niedermayer.cc>
Tue, 15 May 2018 15:06:59 +0000 (17:06 +0200)
committerMichael Niedermayer <michael@niedermayer.cc>
Sun, 17 Jun 2018 23:16:04 +0000 (01:16 +0200)
commitce7be9cdc5d53242e1b326f40289c2ceec63a2d1
tree3a3927d5a3ae91ec6ee7572b81b89ec5d637e082
parent26667dc5baaf922ce24933bb1509515b1eb05e9b
avformat/mov: Break out early if chunk_count is 0 in mov_build_index()

Without this some operations might overflow (undefined behavior)
even though the index adding loop would never execute

No testcase known

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 56e76bd0579cc7f7b28860885d9e569a39daf41b)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
libavformat/mov.c