Fix memory leak in recursive property gets; this directly affects "svn propget --depth=infinity", but also affects every update because of the crawl for svn:mergeinfo for elision.
Fix memory leak in recursive property gets; this directly affects "svn
propget --depth=infinity", but also affects every update because of
the crawl for svn:mergeinfo for elision.

Found by: sussman

* subversion/libsvn_client/prop_commands.c
  (propget_walk_cb): Use the provided pool to do the actual work;
   then copy the value into the hash's pool if you actually need to
   save it.

jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion