Replace cleanupServer with functions avalilable in ghc <= 8.4

diff --git a/src/Language/Haskell/LSP/Test/Session.hs b/src/Language/Haskell/LSP/Test/Session.hs
index 8612148ce870a56b1e3cc1587567607dc60f4955..f85eed92cfef9ead64e32007c5422188787f63a6 100644 (file)
--- a/src/Language/Haskell/LSP/Test/Session.hs
+++ b/src/Language/Haskell/LSP/Test/Session.hs
@@ -222,7 +222,9 @@ runSessionWithHandles serverIn serverOut serverProc serverHandler config caps ro
       server = (Just serverIn, Just serverOut, Nothing, serverProc)
       serverFinalizer tid = finally (timeout (messageTimeout config * 1000000)
                                              (runSession' exitServer))
-                                    (cleanupProcess server >> killThread tid)
+                                    (terminateProcess serverProc
+                                      >> hClose serverOut
+                                      >> killThread tid)
       
   (result, _) <- bracket serverLauncher serverFinalizer (const $ runSession' session)
   return result