[inferbo] Prune zero should normalize too
[inferbo] Prune zero should normalize too

Reviewed By: jvillard

Differential Revision: D7568573

fbshipit-source-id: 7635bcd

jvillard/infer,facebook/infer,facebook/infer,jvillard/infer,jvillard/infer,jvillard/infer,facebook/infer,facebook/infer,facebook/infer,jvillard/infer,facebook/infer,facebook/infer,jvillard/infer,jvillard/infer