Function transmission_sys::tr_utf8clean

pub unsafe extern "C" fn tr_utf8clean(
    str: *const c_char, 
    len: usize
) -> *mut c_char

@brief make a copy of 'str' whose non-utf8 content has been corrected or stripped @return a newly-allocated string that must be freed with tr_free() @param str the string to make a clean copy of @param len the length of the string to copy. If -1, the entire string is used.