Fix consecutive heredoc parse with Windows \r.
Fix consecutive heredoc parse with Windows \r.

We failed to swallow enough after the stopper in this case, meaning
that two consecutive heredocs led to an extra newline appearing in
the second one.

salortiz/rakudo,rakudo/rakudo,softmoth/rakudo,nunorc/rakudo,MasterDuke17/rakudo,paultcochrane/rakudo,retupmoca/rakudo,azawawi/rakudo,tony-o/rakudo,skids/rakudo,paultcochrane/rakudo,softmoth/rakudo,ugexe/rakudo,raydiak/rakudo,awwaiid/rakudo,sjn/rakudo,tony-o/deb-rakudodaily,sergot/rakudo,ugexe/rakudo,raydiak/rakudo,b2gills/rakudo,ugexe/rakudo,cognominal/rakudo,raydiak/rakudo,sjn/rakudo,Gnouc/rakudo,Gnouc/rakudo,lucasbuchala/rakudo,ungrim97/rakudo,ungrim97/rakudo,ab5tract/rakudo,teodozjan/rakudo,lucasbuchala/rakudo,labster/rakudo,LLFourn/rakudo,MasterDuke17/rakudo,teodozjan/rakudo,Gnouc/rakudo,sjn/rakudo,LLFourn/rakudo,niner/rakudo,tony-o/deb-rakudodaily,tony-o/deb-rakudodaily,rakudo/rakudo,retupmoca/rakudo,tony-o/deb-rakudodaily,paultcochrane/rakudo,awwaiid/rakudo,awwaiid/rakudo,dankogai/rakudo,ungrim97/rakudo,niner/rakudo,salortiz/rakudo,zostay/rakudo,jonathanstowe/rakudo,tony-o/rakudo,labster/rakudo,niner/rakudo,ab5tract/rakudo,tony-o/rakudo,labster/rakudo,tbrowder/rakudo,MasterDuke17/rakudo,teodozjan/rakudo,Leont/rakudo,zhuomingliang/rakudo,ungrim97/rakudo,zhuomingliang/rakudo,rakudo/rakudo,nbrown/rakudo,zhuomingliang/rakudo,Gnouc/rakudo,usev6/rakudo,rakudo/rakudo,nbrown/rakudo,jonathanstowe/rakudo,azawawi/rakudo,zostay/rakudo,retupmoca/rakudo,skids/rakudo,b2gills/rakudo,lucasbuchala/rakudo,cygx/rakudo,Gnouc/rakudo,dankogai/rakudo,jonathanstowe/rakudo,samcv/rakudo,cognominal/rakudo,nunorc/rakudo,salortiz/rakudo,teodozjan/rakudo,dankogai/rakudo,LLFourn/rakudo,jonathanstowe/rakudo,salortiz/rakudo,softmoth/rakudo,raydiak/rakudo,ugexe/rakudo,ab5tract/rakudo,niner/rakudo,samcv/rakudo,skids/rakudo,tony-o/rakudo,usev6/rakudo,tony-o/deb-rakudodaily,b2gills/rakudo,nunorc/rakudo,ugexe/rakudo,tbrowder/rakudo,Leont/rakudo,usev6/rakudo,laben/rakudo,skids/rakudo,nbrown/rakudo,usev6/rakudo,cygx/rakudo,tbrowder/rakudo,tony-o/deb-rakudodaily,salortiz/rakudo,laben/rakudo,awwaiid/rakudo,labster/rakudo,sergot/rakudo,cygx/rakudo,zostay/rakudo,cygx/rakudo,Leont/rakudo,MasterDuke17/rakudo,softmoth/rakudo,rakudo/rakudo,samcv/rakudo,awwaiid/rakudo,paultcochrane/rakudo,sergot/rakudo,azawawi/rakudo,nbrown/rakudo,lucasbuchala/rakudo,dankogai/rakudo,nunorc/rakudo,tbrowder/rakudo,MasterDuke17/rakudo,dankogai/rakudo,tony-o/deb-rakudodaily,rakudo/rakudo,samcv/rakudo,sjn/rakudo,cygx/rakudo,b2gills/rakudo,Gnouc/rakudo,tbrowder/rakudo,Leont/rakudo,cognominal/rakudo,cognominal/rakudo,tony-o/rakudo,jonathanstowe/rakudo,zostay/rakudo,cognominal/rakudo,skids/rakudo,usev6/rakudo,azawawi/rakudo,nbrown/rakudo,zhuomingliang/rakudo,LLFourn/rakudo,ab5tract/rakudo,ungrim97/rakudo,b2gills/rakudo,retupmoca/rakudo,paultcochrane/rakudo,sergot/rakudo,laben/rakudo,laben/rakudo,sjn/rakudo,lucasbuchala/rakudo,MasterDuke17/rakudo,LLFourn/rakudo,labster/rakudo,tony-o/rakudo,samcv/rakudo,ab5tract/rakudo,softmoth/rakudo,azawawi/rakudo,nbrown/rakudo,tbrowder/rakudo,salortiz/rakudo,labster/rakudo