avoid more build warnings on Windows

Remote/Helper/Hooks.hs

@@ -73,8 +73,8 @@ runHooks r starthook stophook a = do
 		run starthook
 
 		Annex.addCleanup (remoteid ++ "-stop-command") $ runstop lck
-	runstop lck = do
 #ifndef __WINDOWS__
+	runstop lck = do
 		-- Drop any shared lock we have, and take an
 		-- exclusive lock, without blocking. If the lock
 		-- succeeds, we're the only process using this remote,
@@ -90,5 +90,5 @@ runHooks r starthook stophook a = do
 			Right _ -> run stophook
 		liftIO $ closeFd fd
 #else
-		run stophook
+	runstop _lck = run stophook
 #endif