Revert one small, pointless bit of r7400.
Revert one small, pointless bit of r7400.

* subversion/tests/libsvn_fs/fs-test.c (check_no_fs_error): Don't chain
  a null error.


git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@847475 13f79535-47bb-0310-9956-ffa450edef68

wbond/subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,wbond/subversion,YueLinHo/Subversion,wbond/subversion,wbond/subversion,wbond/subversion,YueLinHo/Subversion,YueLinHo/Subversion,wbond/subversion,wbond/subversion