[clang-tidy] simplify boolean expressions
[clang-tidy] simplify boolean expressions

Found with readability-simplify-boolean-expr

Signed-off-by: Rosen Penev <cd9d359349c2d33dfd3bf458517d943871c7c054@gmail.com>

Matroska-Org/libmatroska,Matroska-Org/libmatroska,Matroska-Org/libmatroska