Fix check causing check_prop_mods to not early exit when properties have not been modified.
Fix check causing check_prop_mods to not early exit
when properties have not been modified.

* subversion/libsvn_client/commit_util.c
  (check_prop_mods): Test value of what props_changed
  points to, not the pointer itself.

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