Fix #231, second try.

--HG--
branch : distribute
extra : rebase_source : 72d5afb5f7f7ce1b57adb0bbec68bec003c6e699

distribute_setup.py

@@ -316,6 +316,7 @@ def _create_fake_setuptools_pkg_info(placeholder):
 
     if not os.access(pkg_info, os.W_OK):
         log.warn("Don't have permissions to write %s, skipping", pkg_info)
+        return
 
     log.warn('Creating %s', pkg_info)
     f = open(pkg_info, 'w')