Follow-up to 1717869: Second attempt to fix the compile error with VC .
Follow-up to 1717869: Second attempt to fix the compile error with VC .

* subversion/tests/libsvn_fs_fs/fs-fs-pack-test.c
  (compare_0_length_rep): When in doubt, use macros.

git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@1717873 13f79535-47bb-0310-9956-ffa450edef68

YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion