diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/Erebos/Storage/Key.hs | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/src/Erebos/Storage/Key.hs b/src/Erebos/Storage/Key.hs index b6afc20..5da79e3 100644 --- a/src/Erebos/Storage/Key.hs +++ b/src/Erebos/Storage/Key.hs @@ -80,6 +80,7 @@ moveKeys from to = liftIO $ do return M.empty (StorageMemory { memKeys = fromKeys }, StorageMemory { memKeys = toKeys }) -> do - modifyMVar_ fromKeys $ \fkeys -> do - modifyMVar_ toKeys $ return . M.union fkeys - return M.empty + when (fromKeys /= toKeys) $ do + modifyMVar_ fromKeys $ \fkeys -> do + modifyMVar_ toKeys $ return . M.union fkeys + return M.empty |