[minor] Unnecessary sprintf
[minor] Unnecessary sprintf

Reviewed By: jvillard

Differential Revision: D29433849

fbshipit-source-id: 23330f1c1

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