Apply hlint hints

All hints are applied in one single commit, as a commit per hint would
result in 80+ separate commits—tihs is really just too much noise.

Related: https://github.com/xmonad/xmonad-contrib/issues/537

scripts/xmonadctl.hs

@@ -33,14 +33,13 @@ parse input addr args = case args of
 
 repl :: String -> IO ()
 repl addr = do e <- isEOF
-               case e of
-                True -> return ()
-                False -> do l <- getLine
-                            sendCommand addr l
-                            repl addr
+               unless e $ do
+                 l <- getLine
+                 sendCommand addr l
+                 repl addr
 
 sendAll :: String -> [String] -> IO ()
-sendAll addr ss = foldr (\a b -> sendCommand addr a >> b) (return ()) ss
+sendAll addr = foldr (\a b -> sendCommand addr a >> b) (return ())
 
 sendCommand :: String -> String -> IO ()
 sendCommand addr s = do

scripts/xmonadpropread.hs

@@ -1,5 +1,7 @@
 #!/usr/bin/env runhaskell
 
+{-# LANGUAGE LambdaCase #-}
+
 -- Copyright Spencer Janssen <spencerjanssen@gmail.com>
 -- BSD3 (see LICENSE)
 --
@@ -29,7 +31,7 @@ main :: IO ()
 main = do
     hSetBuffering stdout LineBuffering
 
-    atom <- flip fmap getArgs $ \args -> case args of
+    atom <- flip fmap getArgs $ \case
         [a] -> a
         _   -> "_XMONAD_LOG"