fix gtDispTree (#14326)
fix gtDispTree (#14326)

* fix gtDispTree

It is legal situation when we pass ILNone (for example for local stores:
gtDispChild(tree->gtOp.gtOp1, indentStack, IINone);). In this code we
poped value and didn't push anything back, it ended with the stack
underflow.

cshung/coreclr,ruben-ayrapetyan/coreclr,poizan42/coreclr,wateret/coreclr,mmitche/coreclr,wtgodbe/coreclr,botaberg/coreclr,parjong/coreclr,parjong/coreclr,mmitche/coreclr,yizhang82/coreclr,yizhang82/coreclr,rartemev/coreclr,poizan42/coreclr,wateret/coreclr,ruben-ayrapetyan/coreclr,botaberg/coreclr,JosephTremoulet/coreclr,parjong/coreclr,poizan42/coreclr,poizan42/coreclr,rartemev/coreclr,JosephTremoulet/coreclr,hseok-oh/coreclr,hseok-oh/coreclr,wtgodbe/coreclr,poizan42/coreclr,hseok-oh/coreclr,rartemev/coreclr,wtgodbe/coreclr,wateret/coreclr,botaberg/coreclr,JosephTremoulet/coreclr,cshung/coreclr,krk/coreclr,cshung/coreclr,krk/coreclr,krk/coreclr,hseok-oh/coreclr,yizhang82/coreclr,JosephTremoulet/coreclr,cshung/coreclr,wateret/coreclr,rartemev/coreclr,yizhang82/coreclr,rartemev/coreclr,ruben-ayrapetyan/coreclr,mmitche/coreclr,krk/coreclr,ruben-ayrapetyan/coreclr,poizan42/coreclr,mmitche/coreclr,JosephTremoulet/coreclr,botaberg/coreclr,mmitche/coreclr,wateret/coreclr,parjong/coreclr,wtgodbe/coreclr,ruben-ayrapetyan/coreclr,JosephTremoulet/coreclr,hseok-oh/coreclr,ruben-ayrapetyan/coreclr,botaberg/coreclr,yizhang82/coreclr,wtgodbe/coreclr,wateret/coreclr,cshung/coreclr,cshung/coreclr,krk/coreclr,parjong/coreclr,rartemev/coreclr,krk/coreclr,botaberg/coreclr,mmitche/coreclr,parjong/coreclr,wtgodbe/coreclr,yizhang82/coreclr,hseok-oh/coreclr