Fix a typo in comment.
Fix a typo in comment.

* subversion/libsvn_client/update.c
  (svn_client__update_internal): s/boton/baton/

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