On the 'move-tracking-2' branch: A follow-up fix after r1627797.

* subversion/svnmover/svnmover.c
  (branch_mappings_delete,
   branch_mappings_copy): Take a boolean, not a pointer-to-boolean.

git-svn-id: https://svn.apache.org/repos/asf/subversion/branches/move-tracking-2@1627838 13f79535-47bb-0310-9956-ffa450edef68