On svn-auth-x509, let's not assert() just because we find a cert with data
that doesn't match the encoding tag.

* subversion/libsvn_subr/x509parse.c
  (x509name_to_utf8_string): If the length doesn't match the encoding just
    run it through the fuzzy_escape, like we do for any other error.


git-svn-id: https://svn.apache.org/repos/asf/subversion/branches/svn-auth-x509@1613668 13f79535-47bb-0310-9956-ffa450edef68