close stdin handles before waiting on commands

Fixes reversion in recent conversions, the old code relied on the GC
apparently, but the new code explicitly waits on the process, so must
close stdin handle first or the command will never exit.

Git/Command.hs

@@ -103,15 +103,15 @@ pipeWriteRead params writer repo = assertLocal repo $
 
 {- Runs a git command, feeding it input on a handle with an action. -}
 pipeWrite :: [CommandParam] -> Repo -> (Handle -> IO ()) -> IO ()
-pipeWrite params repo a = assertLocal repo $
+pipeWrite params repo feeder = assertLocal repo $
 	let p = (gitCreateProcess params repo)
 		{ std_in = CreatePipe }
 	in withCreateProcess p (go p)
   where
-	go p (Just hin) _ _ pid = 
+	go p (Just hin) _ _ pid = do
+		feeder hin
+		hClose hin
 		forceSuccessProcess p pid
-			`after`
-		a hin
 	go _ _ _ _ _ = error "internal"
 
 {- Reads null terminated output of a git command (as enabled by the -z 

Remote/Glacier.hs

@@ -166,10 +166,10 @@ store' r k b p = go =<< glacierEnv c gc u
 		let cmd = (proc "glacier" (toCommand params)) { env = Just e }
 			{ std_in = CreatePipe }
 		in liftIO $ withCreateProcess cmd (go' cmd)
-	go' cmd (Just hin) _ _ pid =
-		forceSuccessProcess cmd pid
-			`after`
+	go' cmd (Just hin) _ _ pid = do
 		meteredWrite p hin b
+		hClose hin
+		forceSuccessProcess cmd pid
 	go' _ _ _ _ _ = error "internal"
 
 retrieve :: Remote -> Retriever