FIX #1669 (GHCi debugger underlining is in the wrong place)
FIX #1669 (GHCi debugger underlining is in the wrong place)

We weren't taking into account the offset added by the line numbers:

Stopped at break020.hs:10:2-8
_result :: IO () = _
9  main = do
10    line1 0
     ^^^^^^^
11    line2 0


This patch adjusts that 


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