[infer] make the Fragment Retains View warnings pretty-printable
[infer] make the Fragment Retains View warnings pretty-printable

Reviewed By: mbouaziz

Differential Revision: D14360854

fbshipit-source-id: d6646c936

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