ra_serf: exit abort_edit early when the activity wasn't created. 
ra_serf: exit abort_edit early when the activity wasn't created. 

* subversion/libsvn_ra_serf/commit.c
  (abort_edit): if no activity was created, don't try to delete it. 
   Small comment fix.

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