git version 2.4.0
Removing ffbuild/config.log
From https://git.ffmpeg.org/ffmpeg
 * branch            master     -> FETCH_HEAD
HEAD is now at e84b3c7 avcodec/vp9: Fixed memory leak when vp9_frame_alloc() function fails.
e84b3c7e98196cbe93321aa8aa883bc0775bdcf6