Changelog: correct typo

Signed-off-by: Timothy Gu <timothygu99@gmail.com>
doc/bitstream_filters: remove mp3_header_decompress filter

It was removed in commit c6080d89009056530119ab794ad02e4d515c7754.
avformat/ipmovie: Check OPCODE_CREATE_TIMER size

Fixes use of uninitialized memory
Fixes: msan_uninit-mem_7f81e836ef8c_5930_ipmovie_interplayvideo_interplay_dpcm__bislogo.mve
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>