Look through bridgeFromObjectiveC calls to find forced casts within optional injections.
Look through bridgeFromObjectiveC calls to find forced casts within optional injections.

Fixes <rdar://problem/17003302>.


Swift SVN r18563

apple/swift-corelibs-foundation,apple/swift-corelibs-foundation,apple/swift-corelibs-foundation,apple/swift-corelibs-foundation,apple/swift-corelibs-foundation