Remove a loop case

Summary: Removed the subexpression from VisitCXXBindTemporaryExpr as it was part of an infinite loop.

Test Plan: Analysed the file that was previously getting stuck, and it now terminates.

Reviewers: mathieubaudet

Reviewed By: mathieubaudet

Differential Revision: https://phabricator.fb.com/D1631674

Tasks: 5371751