* subversion/libsvn_wc/wc-metadata.sql
  (STMT_UPGRADE_31_SELECT_WCROOT_NODES): Properly handle the case that
    r.op_depth is NULL for the working copy root, by moving it to the join.


git-svn-id: https://svn.apache.org/repos/asf/subversion/trunk@1475963 13f79535-47bb-0310-9956-ffa450edef68