Compiler warnings in dired.c

[Eli Zaretskii]

This change:

 2009-10-24  Andreas Schwab  <address@hidden>
 
        * dired.c (Ffile_attributes): Simplify now that FIXNUM_OVERFLOW_P
        can properly handle unsigned types.
        (make_uid, make_gid): Removed.

causes these warnings on a 64-bit host:

  dired.c: In function 'Ffile_attributes':
  dired.c:1039: warning: comparison is always false due to limited range of 
data type
  dired.c:1039: warning: comparison is always false due to limited range of 
data type
  dired.c:1043: warning: comparison is always false due to limited range of 
data type
  dired.c:1043: warning: comparison is always false due to limited range of 
data type