On svn-auth-x509 branch, fix what I busted in r1613668.

* subversion/libsvn_subr/x509parse.c: Add missing closing parens and reverse
    the test.


git-svn-id: https://svn.apache.org/repos/asf/subversion/branches/svn-auth-x509@1613681 13f79535-47bb-0310-9956-ffa450edef68