Following up on r1531002, commit wc_db.c that should have been part of the
commit.

* subversion/libsvn_wc/wc_db.c
  As documented in r1531002. Will propedit.


git-svn-id: https://svn.apache.org/repos/asf/subversion/trunk@1531004 13f79535-47bb-0310-9956-ffa450edef68