Do not leak mutex if i_chroma is VLC_CODEC_ANDROID_OPAQUE.
Signed-off-by: Martin Storsjö <martin@martin.st>
(cherry picked from commit 3d90771a7b113a554ddda9f3ea98ac137f5c9dcc)
Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>