Fix warning: potentially uninitialized local variable 'recentAssignedRef' used
Fix warning: potentially uninitialized local variable 'recentAssignedRef' used

[tfs-changeset: 1678567]

ruben-ayrapetyan/coreclr,mmitche/coreclr,JosephTremoulet/coreclr,ruben-ayrapetyan/coreclr,cshung/coreclr,cshung/coreclr,cshung/coreclr,poizan42/coreclr,yizhang82/coreclr,cshung/coreclr,cshung/coreclr,wtgodbe/coreclr,JosephTremoulet/coreclr,poizan42/coreclr,krk/coreclr,yizhang82/coreclr,wtgodbe/coreclr,krk/coreclr,wtgodbe/coreclr,yizhang82/coreclr,yizhang82/coreclr,krk/coreclr,krk/coreclr,wateret/coreclr,wtgodbe/coreclr,krk/coreclr,yizhang82/coreclr,poizan42/coreclr,poizan42/coreclr,wtgodbe/coreclr,wtgodbe/coreclr,wateret/coreclr,mmitche/coreclr,JosephTremoulet/coreclr,mmitche/coreclr,wateret/coreclr,wateret/coreclr,ruben-ayrapetyan/coreclr,poizan42/coreclr,yizhang82/coreclr,mmitche/coreclr,JosephTremoulet/coreclr,ruben-ayrapetyan/coreclr,krk/coreclr,ruben-ayrapetyan/coreclr,cshung/coreclr,JosephTremoulet/coreclr,wateret/coreclr,ruben-ayrapetyan/coreclr,wateret/coreclr,JosephTremoulet/coreclr,mmitche/coreclr,poizan42/coreclr,mmitche/coreclr