Add missing import (fixes #5460).
Add missing import (fixes #5460).

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