package.py - Fixed issue with zip renaming on Win platform

package.py

@@ -291,11 +291,12 @@ def open(self):
         return self
 
     def close(self, failed=False):
+        self._zip.close()
+        self._zip = None
         if failed:
             os.unlink(self._tmp_filename)
         else:
             os.replace(self._tmp_filename, self.filename)
-        self._zip = None
 
     def __enter__(self):
         return self.open()