returning if setuptools is not found

--HG--
branch : distribute
extra : rebase_source : e39726368ef61d71c6bf4b023ba050083584a941

distribute_setup.py

@@ -240,7 +240,8 @@ def _remove_flat_installation(placeholder):
             break
     if not found:
         log.warn('Could not locate setuptools*.egg-info')
-    else:
+        return
+
     log.warn('Removing elements out of the way...')
     pkg_info = os.path.join(placeholder, file)
     if os.path.isdir(pkg_info):