Move '#pragma warning(disable:21000)' to correct place (#10455)
Move '#pragma warning(disable:21000)' to correct place (#10455)

Whilst I was writing a blog post ['A Hitchhikers Guide to the CoreCLR Source Code'](http://mattwarren.org/2017/03/23/Hitchhikers-Guide-to-the-CoreCLR-Source-Code/#top-10-lists) I noticed that a `#pragma warning(disable:21000)` was mis-aligned.

I'm pretty sure that having it in the wrong place doesn't cause a problem (i.e. this doesn't actually *fix* anything), because the other methods are smaller, so I understand if you don't want to take the PR.
mskvortsov/coreclr,ragmani/coreclr,wtgodbe/coreclr,yeaicc/coreclr,JonHanna/coreclr,mmitche/coreclr,JosephTremoulet/coreclr,cydhaselton/coreclr,cshung/coreclr,alexperovich/coreclr,yeaicc/coreclr,hseok-oh/coreclr,cydhaselton/coreclr,mskvortsov/coreclr,kyulee1/coreclr,hseok-oh/coreclr,cshung/coreclr,hseok-oh/coreclr,kyulee1/coreclr,tijoytom/coreclr,cshung/coreclr,gkhanna79/coreclr,YongseopKim/coreclr,poizan42/coreclr,mmitche/coreclr,wtgodbe/coreclr,alexperovich/coreclr,yizhang82/coreclr,qiudesong/coreclr,botaberg/coreclr,parjong/coreclr,alexperovich/coreclr,sagood/coreclr,ragmani/coreclr,cmckinsey/coreclr,russellhadley/coreclr,mmitche/coreclr,botaberg/coreclr,ruben-ayrapetyan/coreclr,sagood/coreclr,AlexGhiondea/coreclr,James-Ko/coreclr,yizhang82/coreclr,JonHanna/coreclr,ragmani/coreclr,yizhang82/coreclr,dpodder/coreclr,James-Ko/coreclr,alexperovich/coreclr,hseok-oh/coreclr,gkhanna79/coreclr,botaberg/coreclr,ruben-ayrapetyan/coreclr,alexperovich/coreclr,JosephTremoulet/coreclr,tijoytom/coreclr,JonHanna/coreclr,wateret/coreclr,kyulee1/coreclr,wateret/coreclr,tijoytom/coreclr,dpodder/coreclr,jamesqo/coreclr,rartemev/coreclr,cydhaselton/coreclr,dpodder/coreclr,poizan42/coreclr,YongseopKim/coreclr,YongseopKim/coreclr,kyulee1/coreclr,AlexGhiondea/coreclr,mskvortsov/coreclr,gkhanna79/coreclr,JosephTremoulet/coreclr,parjong/coreclr,JonHanna/coreclr,cmckinsey/coreclr,JonHanna/coreclr,yeaicc/coreclr,russellhadley/coreclr,krytarowski/coreclr,ragmani/coreclr,James-Ko/coreclr,YongseopKim/coreclr,sagood/coreclr,botaberg/coreclr,wtgodbe/coreclr,mskvortsov/coreclr,botaberg/coreclr,parjong/coreclr,botaberg/coreclr,krk/coreclr,wateret/coreclr,James-Ko/coreclr,wtgodbe/coreclr,yizhang82/coreclr,jamesqo/coreclr,YongseopKim/coreclr,wateret/coreclr,mskvortsov/coreclr,krk/coreclr,pgavlin/coreclr,JosephTremoulet/coreclr,James-Ko/coreclr,parjong/coreclr,hseok-oh/coreclr,pgavlin/coreclr,krk/coreclr,mmitche/coreclr,AlexGhiondea/coreclr,ragmani/coreclr,krytarowski/coreclr,wateret/coreclr,rartemev/coreclr,cshung/coreclr,pgavlin/coreclr,sagood/coreclr,parjong/coreclr,krytarowski/coreclr,gkhanna79/coreclr,pgavlin/coreclr,poizan42/coreclr,alexperovich/coreclr,yeaicc/coreclr,dpodder/coreclr,pgavlin/coreclr,JonHanna/coreclr,ruben-ayrapetyan/coreclr,JosephTremoulet/coreclr,yeaicc/coreclr,cydhaselton/coreclr,tijoytom/coreclr,russellhadley/coreclr,ragmani/coreclr,mmitche/coreclr,wtgodbe/coreclr,James-Ko/coreclr,russellhadley/coreclr,krytarowski/coreclr,krk/coreclr,cmckinsey/coreclr,cydhaselton/coreclr,kyulee1/coreclr,qiudesong/coreclr,sagood/coreclr,JosephTremoulet/coreclr,jamesqo/coreclr,ruben-ayrapetyan/coreclr,russellhadley/coreclr,ruben-ayrapetyan/coreclr,cydhaselton/coreclr,cshung/coreclr,russellhadley/coreclr,krk/coreclr,jamesqo/coreclr,dpodder/coreclr,cmckinsey/coreclr,parjong/coreclr,rartemev/coreclr,ruben-ayrapetyan/coreclr,poizan42/coreclr,yizhang82/coreclr,mmitche/coreclr,cmckinsey/coreclr,wtgodbe/coreclr,qiudesong/coreclr,poizan42/coreclr,pgavlin/coreclr,yeaicc/coreclr,tijoytom/coreclr,yeaicc/coreclr,gkhanna79/coreclr,cshung/coreclr,cmckinsey/coreclr,wateret/coreclr,cmckinsey/coreclr,qiudesong/coreclr,rartemev/coreclr,dpodder/coreclr,krytarowski/coreclr,AlexGhiondea/coreclr,rartemev/coreclr,yizhang82/coreclr,qiudesong/coreclr,poizan42/coreclr,kyulee1/coreclr,jamesqo/coreclr,YongseopKim/coreclr,qiudesong/coreclr,tijoytom/coreclr,gkhanna79/coreclr,krytarowski/coreclr,sagood/coreclr,krk/coreclr,jamesqo/coreclr,AlexGhiondea/coreclr,rartemev/coreclr,mskvortsov/coreclr,hseok-oh/coreclr,AlexGhiondea/coreclr