Pool usage fixes.  (How come no one caught that in post-commit review?)
Pool usage fixes.  (How come no one caught that in post-commit review?)

* subversion/libsvn_fs_fs/rep-cache.c
  (svn_fs_fs__walk_rep_reference):
    Destroy the iterpool.  Use the iterpool in more places.

git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@1146770 13f79535-47bb-0310-9956-ffa450edef68

YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion