Fix stg_block_async on registerised Win64
Fix stg_block_async on registerised Win64

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