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.

jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion