Attempt to fix the windows tests by ensuring we destroy the wc_context prior to exiting svn_client_commit4().
Attempt to fix the windows tests by ensuring we destroy the wc_context
prior to exiting svn_client_commit4().

* subversion/libsvn_client/commit.c
  (svn_client_commit4): Destroy the wc_context.  Also, create the wc_context
    a bit later (after all the early outs).

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