[IR] address long-lived FIXME in computing free variables
[IR] address long-lived FIXME in computing free variables

Summary: That should do it.

Reviewed By: sblackshear, mbouaziz

Differential Revision: D7113356

fbshipit-source-id: 4b5ebb0

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