Bug fix: Not all ConstraintManagers always return a null state when setting isFeasible to false. This is something we may wish to do further validation on.
Bug fix: Not all ConstraintManagers always return a null state when setting
isFeasible to false. This is something we may wish to do further validation on.


git-svn-id: ffe668792ed300d6c2daa1f6eba2e0aa28d7ec6c@71134 91177308-0d34-0410-b5e6-96231b3b80d8

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