message: fixed a logic error in strchr
diff: @@ -92,16 +92,13 @@ pub unsafe extern "C" fn strcat(s1: *mut c_char, s2: *const c_char) -> *mut c_ch
  pub unsafe extern "C" fn strchr(s: *const c_char, c: c_int) -> *mut c_char {
  let c = c as i8;
  let mut i = 0;
  - loop {
  - let cur = *s.offset(i);
  - if cur == c {
  + while *s.offset(i) != 0 {
  + if *s.offset(i) == c {
  return s.offset(i) as *mut c_char;
  }
  - if cur == 0 {
  - return ptr::null_mut();
  - }
  i += 1;
  }
  + ptr::null_mut()
  }
  #[no_mangle]
  