Attaching comments to declarations: ignore implicit decls.  Decl::isImplicit() does not return true for all implicit decls currently.
Attaching comments to declarations: ignore implicit decls.  Decl::isImplicit()
does not return true for all implicit decls currently.

This should fix PR13634 for now, but Decl::isImplicit() should be fixed, too.


git-svn-id: ffe668792ed300d6c2daa1f6eba2e0aa28d7ec6c@162238 91177308-0d34-0410-b5e6-96231b3b80d8

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