--- a/hgext/convert/hg.py	Wed Apr 22 02:01:22 2009 +0200
+++ b/hgext/convert/hg.py	Wed Apr 22 02:01:22 2009 +0200
@@ -56,8 +56,8 @@
 
     def after(self):
         self.ui.debug(_('run hg sink post-conversion action\n'))
-        self.lock = None
-        self.wlock = None
+        self.lock.release()
+        self.wlock.release()
 
     def revmapfile(self):
         return os.path.join(self.path, ".hg", "shamap")