Follow-up to r1478606.
Follow-up to r1478606.

* subversion/tests/libsvn_subr/error-test.c
  (test_error_symbolic_name): Test the new functionality.

git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@1481293 13f79535-47bb-0310-9956-ffa450edef68

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