Fix some warnings and formatting in HsDecls
Fix some warnings and formatting in HsDecls

GaloisInc/halvm-ghc,vikraman/ghc,snoyberg/ghc,siddhanathan/ghc,da-x/ghc,sdiehl/ghc,ghc-android/ghc,shlevy/ghc,anton-dessiatov/ghc,bitemyapp/ghc,nushio3/ghc,christiaanb/ghc,ekmett/ghc,tjakway/ghcjvm,ekmett/ghc,lukexi/ghc,anton-dessiatov/ghc,acowley/ghc,ezyang/ghc,green-haskell/ghc,holzensp/ghc,snoyberg/ghc,siddhanathan/ghc,sgillespie/ghc,snoyberg/ghc,TomMD/ghc,vTurbine/ghc,fmthoma/ghc,nathyong/microghc-ghc,holzensp/ghc,forked-upstream-packages-for-ghcjs/ghc,mfine/ghc,siddhanathan/ghc,gridaphobe/ghc,green-haskell/ghc,lukexi/ghc,urbanslug/ghc,ezyang/ghc,olsner/ghc,elieux/ghc,ilyasergey/GHC-XAppFix,wxwxwwxxx/ghc,mettekou/ghc,ghc-android/ghc,snoyberg/ghc,christiaanb/ghc,oldmanmike/ghc,oldmanmike/ghc,ekmett/ghc,ml9951/ghc,nomeata/ghc,nkaretnikov/ghc,lukexi/ghc,lukexi/ghc-7.8-arm64,olsner/ghc,snoyberg/ghc,sgillespie/ghc,ezyang/ghc,vikraman/ghc,ilyasergey/GHC-XAppFix,urbanslug/ghc,shlevy/ghc,anton-dessiatov/ghc,mcschroeder/ghc,urbanslug/ghc,hferreiro/replay,bitemyapp/ghc,wxwxwwxxx/ghc,vikraman/ghc,tjakway/ghcjvm,gcampax/ghc,nkaretnikov/ghc,mcschroeder/ghc,mfine/ghc,tibbe/ghc,bitemyapp/ghc,AlexanderPankiv/ghc,mcschroeder/ghc,mcschroeder/ghc,lukexi/ghc-7.8-arm64,shlevy/ghc,lukexi/ghc-7.8-arm64,oldmanmike/ghc,vikraman/ghc,sdiehl/ghc,AlexanderPankiv/ghc,ryantm/ghc,sdiehl/ghc,spacekitteh/smcghc,mcmaniac/ghc,ghc-android/ghc,frantisekfarka/ghc-dsi,mcmaniac/ghc,gcampax/ghc,spacekitteh/smcghc,vikraman/ghc,ml9951/ghc,lukexi/ghc,lukexi/ghc-7.8-arm64,jstolarek/ghc,green-haskell/ghc,nushio3/ghc,ekmett/ghc,nushio3/ghc,GaloisInc/halvm-ghc,sgillespie/ghc,fmthoma/ghc,gridaphobe/ghc,urbanslug/ghc,mfine/ghc,sdiehl/ghc,jstolarek/ghc,shlevy/ghc,mcschroeder/ghc,shlevy/ghc,elieux/ghc,nathyong/microghc-ghc,acowley/ghc,sdiehl/ghc,vikraman/ghc,fmthoma/ghc,nkaretnikov/ghc,nomeata/ghc,ml9951/ghc,olsner/ghc,forked-upstream-packages-for-ghcjs/ghc,frantisekfarka/ghc-dsi,GaloisInc/halvm-ghc,jstolarek/ghc,christiaanb/ghc,wxwxwwxxx/ghc,vTurbine/ghc,da-x/ghc,gcampax/ghc,green-haskell/ghc,sgillespie/ghc,mcmaniac/ghc,ryantm/ghc,nushio3/ghc,acowley/ghc,fmthoma/ghc,tjakway/ghcjvm,da-x/ghc,olsner/ghc,anton-dessiatov/ghc,fmthoma/ghc,jstolarek/ghc,AlexanderPankiv/ghc,GaloisInc/halvm-ghc,nathyong/microghc-ghc,nkaretnikov/ghc,ryantm/ghc,nushio3/ghc,ghc-android/ghc,mettekou/ghc,holzensp/ghc,lukexi/ghc,mettekou/ghc,hferreiro/replay,oldmanmike/ghc,gcampax/ghc,mettekou/ghc,olsner/ghc,ryantm/ghc,elieux/ghc,mettekou/ghc,vTurbine/ghc,mcschroeder/ghc,AlexanderPankiv/ghc,bitemyapp/ghc,frantisekfarka/ghc-dsi,gcampax/ghc,mcmaniac/ghc,TomMD/ghc,ryantm/ghc,mcschroeder/ghc,AlexanderPankiv/ghc,ezyang/ghc,hferreiro/replay,mfine/ghc,acowley/ghc,mfine/ghc,nomeata/ghc,sdiehl/ghc,vikraman/ghc,nomeata/ghc,vTurbine/ghc,vTurbine/ghc,wxwxwwxxx/ghc,elieux/ghc,christiaanb/ghc,TomMD/ghc,fmthoma/ghc,elieux/ghc,siddhanathan/ghc,snoyberg/ghc,ml9951/ghc,tibbe/ghc,holzensp/ghc,green-haskell/ghc,ml9951/ghc,ezyang/ghc,olsner/ghc,mfine/ghc,gridaphobe/ghc,spacekitteh/smcghc,siddhanathan/ghc,TomMD/ghc,ml9951/ghc,nkaretnikov/ghc,gcampax/ghc,nushio3/ghc,sgillespie/ghc,christiaanb/ghc,elieux/ghc,lukexi/ghc-7.8-arm64,GaloisInc/halvm-ghc,ghc-android/ghc,siddhanathan/ghc,nkaretnikov/ghc,nathyong/microghc-ghc,forked-upstream-packages-for-ghcjs/ghc,da-x/ghc,tjakway/ghcjvm,ekmett/ghc,shlevy/ghc,AlexanderPankiv/ghc,siddhanathan/ghc,mettekou/ghc,TomMD/ghc,ghc-android/ghc,ezyang/ghc,hferreiro/replay,TomMD/ghc,ezyang/ghc,ghc-android/ghc,wxwxwwxxx/ghc,vTurbine/ghc,wxwxwwxxx/ghc,nathyong/microghc-ghc,jstolarek/ghc,tibbe/ghc,forked-upstream-packages-for-ghcjs/ghc,christiaanb/ghc,acowley/ghc,hferreiro/replay,gridaphobe/ghc,bitemyapp/ghc,nomeata/ghc,sgillespie/ghc,tjakway/ghcjvm,tjakway/ghcjvm,tjakway/ghcjvm,TomMD/ghc,AlexanderPankiv/ghc,nushio3/ghc,mettekou/ghc,acowley/ghc,anton-dessiatov/ghc,nkaretnikov/ghc,frantisekfarka/ghc-dsi,mcmaniac/ghc,gcampax/ghc,fmthoma/ghc,ml9951/ghc,tibbe/ghc,ml9951/ghc,mfine/ghc,frantisekfarka/ghc-dsi,forked-upstream-packages-for-ghcjs/ghc,da-x/ghc,spacekitteh/smcghc,sgillespie/ghc,urbanslug/ghc,urbanslug/ghc,hferreiro/replay,hferreiro/replay,tibbe/ghc,GaloisInc/halvm-ghc,anton-dessiatov/ghc,urbanslug/ghc,vTurbine/ghc,acowley/ghc,da-x/ghc,forked-upstream-packages-for-ghcjs/ghc,olsner/ghc,gridaphobe/ghc,sdiehl/ghc,nathyong/microghc-ghc,wxwxwwxxx/ghc,ilyasergey/GHC-XAppFix,gridaphobe/ghc,oldmanmike/ghc,forked-upstream-packages-for-ghcjs/ghc,oldmanmike/ghc,shlevy/ghc,da-x/ghc,holzensp/ghc,elieux/ghc,GaloisInc/halvm-ghc,nathyong/microghc-ghc,ilyasergey/GHC-XAppFix,anton-dessiatov/ghc,snoyberg/ghc,spacekitteh/smcghc,christiaanb/ghc,oldmanmike/ghc,gridaphobe/ghc