no longer fail when the type of an execption is not found in the type environement
no longer fail when the type of an execption is not found in the type environement

Summary:
public
Avoid the analysis to fail when the type of an exception cannot be found in the type environement

Reviewed By: sblackshear

Differential Revision: D2743015

fb-gh-sync-id: 7b922eb

xennygrimmato/infer,kageiit/infer,ropas/infer,blzq/infer,ropas/infer,kstreee/infer,jvillard/infer,kageiit/infer,jvillard/infer,kstreee/infer,xennygrimmato/infer,kstreee/infer,ryoon/infer,xennygrimmato/infer,kageiit/infer,kstreee/infer,ryoon/infer,blzq/infer,ryoon/infer,jvillard/infer,ropas/infer,facebook/infer,ryoon/infer,jsachs/infer,xennygrimmato/infer,blzq/infer,kageiit/infer,ropas/infer,facebook/infer,facebook/infer,jvillard/infer,jsachs/infer,jvillard/infer,xennygrimmato/infer,blzq/infer,xennygrimmato/infer,blzq/infer,blzq/infer,jsachs/infer,kageiit/infer,facebook/infer,kageiit/infer,jvillard/infer,ryoon/infer,ryoon/infer,ropas/infer,kstreee/infer,jvillard/infer,kageiit/infer,jsachs/infer,facebook/infer,facebook/infer,jsachs/infer,ropas/infer,kstreee/infer,xennygrimmato/infer,facebook/infer,jsachs/infer