Function libxslt::bindings::UCNV_TO_U_CALLBACK_SUBSTITUTE_60

pub unsafe extern "C" fn UCNV_TO_U_CALLBACK_SUBSTITUTE_60(
    context: *const c_void, 
    toUArgs: *mut UConverterToUnicodeArgs, 
    codeUnits: *const i8, 
    length: i32, 
    reason: u32, 
    err: *mut i32
)