cleanup pending query tracker
cleanup pending query tracker

Summary: Address nits from previous commit.

Reviewed By: kassens

Differential Revision: D2640568

fb-gh-sync-id: 5943cbe0808f47d68843e0864ec917653bc09af8

chentsulin/relay,rosskevin/relay,iamchenxin/relay,atxwebs/relay,Aweary/relay,cpojer/relay,xuorig/relay,benjaminogles/relay,forter/generic-relay,heracek/relay,apalm/relay,kassens/relay,wincent/relay,wincent/relay,kassens/relay,chirag04/relay,wincent/relay,michaelchum/relay,NevilleS/relay,chentsulin/relay,facebook/relay,facebook/relay,heracek/relay,andimarek/generic-relay,apalm/relay,zpao/relay,andimarek/generic-relay,heracek/relay,voideanvalue/relay,voideanvalue/relay,kassens/relay,NevilleS/relay,voideanvalue/relay,chirag04/relay,wincent/relay,venepe/relay,iamchenxin/relay,xuorig/relay,gabelevi/relay,facebook/relay,apalm/relay,cpojer/relay,venepe/relay,voideanvalue/relay,andimarek/generic-relay,facebook/relay,michaelchum/relay,Aweary/relay,voideanvalue/relay,freiksenet/relay,mroch/relay,cpojer/relay,cesarandreu/relay,facebook/relay,dbslone/relay,kassens/relay,atxwebs/relay,freiksenet/relay,atxwebs/relay,venepe/relay,chentsulin/relay,wincent/relay,NevilleS/relay,facebook/relay,xuorig/relay,xuorig/relay,xuorig/relay,josephsavona/relay,voideanvalue/relay,rosskevin/relay,mroch/relay,zpao/relay,michaelchum/relay,Aweary/relay,atxwebs/relay,cesarandreu/relay,mroch/relay,josephsavona/relay,kassens/relay,freiksenet/relay,zpao/relay,cesarandreu/relay,benjaminogles/relay,benjaminogles/relay,yungsters/relay,gabelevi/relay,yungsters/relay,xuorig/relay,gabelevi/relay,dbslone/relay,cpojer/relay,josephsavona/relay,chirag04/relay,kassens/relay,wincent/relay,iamchenxin/relay,yungsters/relay,iamchenxin/relay