Look through parentheses.

This fixes a bug where clang would emit instructions to reclaim a value
that's going to be __bridge-casted to CF.

rdar://problem/34687542

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@314370 91177308-0d34-0410-b5e6-96231b3b80d8
(cherry picked from commit 36c5bf71e4988db2b6d67160293e0bc029bb5737)
2 files changed