LSMASHAudioSource: fixed the channel layout initialization /1 (#63). Used libraries: FFmpeg 77b972b. l-smash c8e2049. obuparse 478adcc. zlib 1.3.1. dav1d 1.4.1. libxml2 v2.12.6. nv-codec-headers n12.2.72.0. xxHash v0.8.2. mfx_dispatch f6aac45. libvpx v1.14.0.