[PATCH] [Annotalysis] Fix to get_canonical_lock_expr

[Delesley Hutchins]

Oops.  Changlog entry should read:

 2011-07-11   DeLesley Hutchins  <delesley@google.com>
      * tree-threadsafe-analyze.c (tree-threadsafe-analyze.c)
        Changed to force rewrite on MEM_REF