On svn-auth-x509 branch, remove return of x509parse_dn_gets() function.

* subversion/libsvn_subr/x509parse.c
  (x509parse_dn_gets): Convert to a void return and change to our normal
    style.  We never used the return and it subtracted two longs to
    return an int, losing precision.


git-svn-id: https://svn.apache.org/repos/asf/subversion/branches/svn-auth-x509@1605791 13f79535-47bb-0310-9956-ffa450edef68