Function openmpt_module_get_instrument_name 

pub unsafe extern "C" fn openmpt_module_get_instrument_name(
    mod_: *mut openmpt_module,
    index: i32,
) -> *const c_char

\brief Get an instrument name

\param mod The module handle to work on. \param index The instrument whose name should be retrieved \return The instrument name. \sa openmpt_module_get_num_instruments