Reduce allocations in CommandQueue.Add.
Reduce allocations in CommandQueue.Add.

maxlang/cockroach,cuongdo/cockroach,nieyy/cockroach,sunya123/cockroach,arjun4084346/cockroach,cuongdo/cockroach,il9ue/cockroach,maxlang/cockroach,vivekmenezes/cockroach,veteranlu/cockroach,nieyy/cockroach,cockroachdb/cockroach,paperstreet/cockroach,petermattis/cockroach,cuongdo/cockroach,paperstreet/cockroach,vaibhavarora/cockroach,il9ue/cockroach,il9ue/cockroach,vaibhavarora/cockroach,maxlang/cockroach,veteranlu/cockroach,vivekmenezes/cockroach,sunya123/cockroach,arjun4084346/cockroach,cockroachdb/cockroach,bg451/cockroach,il9ue/cockroach,petermattis/cockroach,glycerine/cockroach,cockroachdb/cockroach,bg451/cockroach,sunya123/cockroach,maxlang/cockroach,glycerine/cockroach,maxlang/cockroach,glycerine/cockroach,vaibhavarora/cockroach,veteranlu/cockroach,vaibhavarora/cockroach,vaibhavarora/cockroach,paperstreet/cockroach,vivekmenezes/cockroach,sunya123/cockroach,sunya123/cockroach,cuongdo/cockroach,nieyy/cockroach,vaibhavarora/cockroach,nieyy/cockroach,cockroachdb/cockroach,veteranlu/cockroach,vivekmenezes/cockroach,cockroachdb/cockroach,cuongdo/cockroach,il9ue/cockroach,vaibhavarora/cockroach,vivekmenezes/cockroach,paperstreet/cockroach,maxlang/cockroach,vaibhavarora/cockroach,il9ue/cockroach,arjun4084346/cockroach,glycerine/cockroach,cockroachdb/cockroach,cockroachdb/cockroach,veteranlu/cockroach,cockroachdb/cockroach,bg451/cockroach,petermattis/cockroach,nieyy/cockroach,arjun4084346/cockroach,petermattis/cockroach,veteranlu/cockroach,arjun4084346/cockroach,veteranlu/cockroach,maxlang/cockroach,bg451/cockroach,arjun4084346/cockroach,maxlang/cockroach,petermattis/cockroach,glycerine/cockroach,sunya123/cockroach,nieyy/cockroach,bg451/cockroach,bg451/cockroach,petermattis/cockroach,veteranlu/cockroach,vivekmenezes/cockroach,cuongdo/cockroach,paperstreet/cockroach,nieyy/cockroach,paperstreet/cockroach,glycerine/cockroach,vivekmenezes/cockroach,petermattis/cockroach,vivekmenezes/cockroach,paperstreet/cockroach,sunya123/cockroach,sunya123/cockroach,nieyy/cockroach,bg451/cockroach,glycerine/cockroach,arjun4084346/cockroach,cuongdo/cockroach,il9ue/cockroach,paperstreet/cockroach,glycerine/cockroach,il9ue/cockroach,petermattis/cockroach,arjun4084346/cockroach,cuongdo/cockroach