--- a/mercurial/sshserver.py	Wed Apr 22 02:01:22 2009 +0200
+++ b/mercurial/sshserver.py	Wed Apr 22 02:01:22 2009 +0200
@@ -37,7 +37,11 @@
         self.fout.flush()
 
     def serve_forever(self):
-        while self.serve_one(): pass
+        try:
+            while self.serve_one(): pass
+        finally:
+            if self.lock is not None:
+                self.lock.release()
         sys.exit(0)
 
     def serve_one(self):