v8::TryCatch now works correctly with ASAN's UseAfterReturn mode enabled.

BUG=chromium:369962
LOG=N
R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/273383003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21273 ce2b1a6d-e550-0410-aec6-3dcde31c8c00