Fix ValueNumStore::IsVNArrLenUnsignedBound checks
Fix ValueNumStore::IsVNArrLenUnsignedBound checks

VNFuncApp::m_func should be checked first to be sure that m_args[0] and m_args[1] contain valid VNs. It's not clear if m_func can ever be something other than a binary func in the case of a relop VN but the code doesn't look right as it is.

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