RelayFlowGenerator: use .some() instead of .find()
RelayFlowGenerator: use .some() instead of .find()

Reviewed By: leebyron

Differential Revision: D5879410

fbshipit-source-id: 349805bb6cff07d9120ac6efb471aa7803e61c4b

dbslone/relay,benjaminogles/relay,freiksenet/relay,kassens/relay,voideanvalue/relay,wincent/relay,xuorig/relay,freiksenet/relay,apalm/relay,yungsters/relay,apalm/relay,xuorig/relay,iamchenxin/relay,iamchenxin/relay,zpao/relay,voideanvalue/relay,wincent/relay,benjaminogles/relay,facebook/relay,josephsavona/relay,wincent/relay,wincent/relay,atxwebs/relay,xuorig/relay,facebook/relay,facebook/relay,voideanvalue/relay,kassens/relay,atxwebs/relay,kassens/relay,freiksenet/relay,yungsters/relay,iamchenxin/relay,voideanvalue/relay,cpojer/relay,wincent/relay,josephsavona/relay,zpao/relay,kassens/relay,yungsters/relay,facebook/relay,atxwebs/relay,apalm/relay,xuorig/relay,kassens/relay,benjaminogles/relay,atxwebs/relay,iamchenxin/relay,zpao/relay,wincent/relay,dbslone/relay,facebook/relay,xuorig/relay,josephsavona/relay,facebook/relay,xuorig/relay,voideanvalue/relay,cpojer/relay,voideanvalue/relay,kassens/relay,cpojer/relay,cpojer/relay