Method SetPosAbs

src/decoder/plugins/WavpackDecoderPlugin.cxx:253–260

	}

	int SetPosAbs(InputStream::offset_type pos) noexcept {
		try {
			is.LockSeek(pos);
			return 0;
		} catch (...) {
			return -1;
		}
	}

	int SetPosRel(InputStream::offset_type delta, int mode) noexcept {
		offset_type offset = delta;