Revert r240270 ("Fixed/added namespace ending comments using clang-tidy").

llvm-svn: 240353
diff --git a/clang/lib/AST/Decl.cpp b/clang/lib/AST/Decl.cpp
index 973d79f..d9a3389 100644
--- a/clang/lib/AST/Decl.cpp
+++ b/clang/lib/AST/Decl.cpp
@@ -1350,7 +1350,7 @@
     return LV;
   }
 };
-} // namespace clang
+}
 
 static LinkageInfo getLVForDecl(const NamedDecl *D,
                                 LVComputationKind computation) {