Removed check for NULL CFG.  Bad CFGs will fire an assertion failure in the CFG builder logic.
Removed check for NULL CFG.  Bad CFGs will fire an assertion failure
in the CFG builder logic.


git-svn-id: ffe668792ed300d6c2daa1f6eba2e0aa28d7ec6c@42033 91177308-0d34-0410-b5e6-96231b3b80d8

apple/swift-clang,llvm-mirror/clang,llvm-mirror/clang,llvm-mirror/clang,apple/swift-clang,llvm-mirror/clang,apple/swift-clang,llvm-mirror/clang,apple/swift-clang,llvm-mirror/clang,llvm-mirror/clang,apple/swift-clang,apple/swift-clang,apple/swift-clang,llvm-mirror/clang,apple/swift-clang,apple/swift-clang,llvm-mirror/clang,apple/swift-clang,llvm-mirror/clang