forked from libretro/Lakka-LibreELEC
fixes following build error: ./toolchain/armv7a-libreelec-linux-gnueabihf/sysroot/usr/lib/ libopenmpt.a(libopenmpt_la-Load_xm.o):Load_xm.cpp:function OpenMPT::ReadSampleData(OpenMPT::ModSample&, OpenMPT::SampleIO, OpenMPT::detail::FileReader<OpenMPT::FileReaderTraitsStdStream>&, bool&): error: undefined reference to 'ov_open_callbacks'