Fix check for float args under windows x64 remorph
Fix check for float args under windows x64 remorph

When re-morphing, `argx` will not have the argument's type if the argument
has been moved to the late args list, so check the arg table entry
instead.  The unix x64 codepath already had the correct code, so just
remove the ifdef.

wtgodbe/coreclr,qiudesong/coreclr,wateret/coreclr,ruben-ayrapetyan/coreclr,botaberg/coreclr,neurospeech/coreclr,AlexGhiondea/coreclr,YongseopKim/coreclr,wtgodbe/coreclr,hseok-oh/coreclr,cydhaselton/coreclr,ragmani/coreclr,ruben-ayrapetyan/coreclr,yeaicc/coreclr,wateret/coreclr,AlexGhiondea/coreclr,cydhaselton/coreclr,JosephTremoulet/coreclr,krk/coreclr,jamesqo/coreclr,botaberg/coreclr,wtgodbe/coreclr,YongseopKim/coreclr,botaberg/coreclr,cmckinsey/coreclr,pgavlin/coreclr,qiudesong/coreclr,yeaicc/coreclr,hseok-oh/coreclr,tijoytom/coreclr,YongseopKim/coreclr,poizan42/coreclr,ragmani/coreclr,sjsinju/coreclr,wateret/coreclr,hseok-oh/coreclr,AlexGhiondea/coreclr,JosephTremoulet/coreclr,pgavlin/coreclr,krk/coreclr,JosephTremoulet/coreclr,pgavlin/coreclr,cmckinsey/coreclr,qiudesong/coreclr,jamesqo/coreclr,hseok-oh/coreclr,JonHanna/coreclr,wtgodbe/coreclr,wtgodbe/coreclr,parjong/coreclr,neurospeech/coreclr,gkhanna79/coreclr,sjsinju/coreclr,dpodder/coreclr,cydhaselton/coreclr,ragmani/coreclr,parjong/coreclr,neurospeech/coreclr,krk/coreclr,cmckinsey/coreclr,rartemev/coreclr,botaberg/coreclr,mmitche/coreclr,mskvortsov/coreclr,cmckinsey/coreclr,rartemev/coreclr,alexperovich/coreclr,kyulee1/coreclr,James-Ko/coreclr,cmckinsey/coreclr,ragmani/coreclr,cshung/coreclr,gkhanna79/coreclr,botaberg/coreclr,ruben-ayrapetyan/coreclr,russellhadley/coreclr,yizhang82/coreclr,russellhadley/coreclr,gkhanna79/coreclr,alexperovich/coreclr,cydhaselton/coreclr,sjsinju/coreclr,dpodder/coreclr,krytarowski/coreclr,mskvortsov/coreclr,tijoytom/coreclr,kyulee1/coreclr,parjong/coreclr,alexperovich/coreclr,AlexGhiondea/coreclr,JonHanna/coreclr,krk/coreclr,tijoytom/coreclr,hseok-oh/coreclr,sagood/coreclr,James-Ko/coreclr,James-Ko/coreclr,cshung/coreclr,JosephTremoulet/coreclr,gkhanna79/coreclr,AlexGhiondea/coreclr,jamesqo/coreclr,qiudesong/coreclr,rartemev/coreclr,alexperovich/coreclr,wtgodbe/coreclr,wateret/coreclr,poizan42/coreclr,pgavlin/coreclr,yizhang82/coreclr,wateret/coreclr,kyulee1/coreclr,krytarowski/coreclr,yeaicc/coreclr,qiudesong/coreclr,krytarowski/coreclr,jamesqo/coreclr,sagood/coreclr,russellhadley/coreclr,cmckinsey/coreclr,cydhaselton/coreclr,pgavlin/coreclr,YongseopKim/coreclr,dpodder/coreclr,mskvortsov/coreclr,poizan42/coreclr,sagood/coreclr,jamesqo/coreclr,parjong/coreclr,wateret/coreclr,krk/coreclr,krytarowski/coreclr,James-Ko/coreclr,mskvortsov/coreclr,tijoytom/coreclr,cmckinsey/coreclr,cshung/coreclr,ragmani/coreclr,qiudesong/coreclr,mskvortsov/coreclr,russellhadley/coreclr,kyulee1/coreclr,ruben-ayrapetyan/coreclr,yeaicc/coreclr,yeaicc/coreclr,kyulee1/coreclr,JonHanna/coreclr,mmitche/coreclr,rartemev/coreclr,sjsinju/coreclr,tijoytom/coreclr,rartemev/coreclr,sjsinju/coreclr,gkhanna79/coreclr,mmitche/coreclr,cydhaselton/coreclr,kyulee1/coreclr,cshung/coreclr,JosephTremoulet/coreclr,sagood/coreclr,krytarowski/coreclr,JonHanna/coreclr,mmitche/coreclr,sjsinju/coreclr,neurospeech/coreclr,dpodder/coreclr,tijoytom/coreclr,russellhadley/coreclr,mmitche/coreclr,krk/coreclr,James-Ko/coreclr,dpodder/coreclr,ragmani/coreclr,neurospeech/coreclr,yizhang82/coreclr,botaberg/coreclr,poizan42/coreclr,JonHanna/coreclr,parjong/coreclr,poizan42/coreclr,krytarowski/coreclr,ruben-ayrapetyan/coreclr,ruben-ayrapetyan/coreclr,cshung/coreclr,alexperovich/coreclr,JonHanna/coreclr,yizhang82/coreclr,parjong/coreclr,YongseopKim/coreclr,sagood/coreclr,jamesqo/coreclr,YongseopKim/coreclr,AlexGhiondea/coreclr,JosephTremoulet/coreclr,mskvortsov/coreclr,yizhang82/coreclr,dpodder/coreclr,hseok-oh/coreclr,russellhadley/coreclr,sagood/coreclr,cshung/coreclr,alexperovich/coreclr,neurospeech/coreclr,rartemev/coreclr,mmitche/coreclr,yizhang82/coreclr,yeaicc/coreclr,yeaicc/coreclr,James-Ko/coreclr,pgavlin/coreclr,gkhanna79/coreclr,poizan42/coreclr