[starvation] ignore unary ops in lock paths
[starvation] ignore unary ops in lock paths

Summary: Try a little bit harder to find an access expression.

Reviewed By: ezgicicek

Differential Revision: D19344989

fbshipit-source-id: 5925e10cf

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