[analyzer] Run post-stmt checks for DeclStmt.
[analyzer] Run post-stmt checks for DeclStmt.

No tests because no in-tree checkers use this, but that shouldn't stop
out-of-tree checkers.

Found by Aemon Cannon!

git-svn-id: ffe668792ed300d6c2daa1f6eba2e0aa28d7ec6c@190650 91177308-0d34-0410-b5e6-96231b3b80d8

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