common: Adapt to thread_label's addition to TSOClosure

A new thread_label :: Maybe b field was added to TSOConstructor in GenClosure in ghc-heap in ghc@436867d6. This updates the corresponding data constructor on the ghc-debug-common side.

Fixes #10.

requested review from @mpickering

assigned to @RyanGlScott

Note that there is one more place where TSOClosure is used here in ghc-debug-brick:

closureReferencesAndLabels :: GD.DebugClosure pap string stack pointer -> [(String, Either pointer stack)]
closureReferencesAndLabels closure = case closure of
  TSOClosure {..} ->
    [ ("Stack", Left tsoStack)
    , ("Link", Left _link)
    , ("Global Link", Left global_link)
    , ("TRec", Left trec)
    , ("Blocked Exceptions", Left blocked_exceptions)
    , ("Blocking Queue", Left bq)
    ]

I'm unclear if this code needs to be updated to account for thread_label.

mentioned in commit head.hackage@871b8aec

I need to implement a version-based decoding scheme to handle this change as otherwise you won't be able to use ghc-debug with multiple different GHC versions when updates like this are made.

I believe this was resolved separately in 3fafa46e. I'll go ahead and close this, but feel free to re-open it if I am mistaken.

closed