Fixed/added namespace ending comments using clang-tidy. NFC

A few more files that were fixed while preparing r240270.

llvm-svn: 240271

include/llvm/ADT/ImmutableList.h

@@ -224,6 +224,6 @@ template <typename T> struct isPodLike;
 template <typename T>
 struct isPodLike<ImmutableList<T> > { static const bool value = true; };
 
-} // end llvm namespace
+} // namespace llvm
 
 #endif

include/llvm/ADT/PackedVector.h

@@ -154,6 +154,6 @@ public:
 template <typename T>
 class PackedVector<T, 0>;
 
-} // end llvm namespace
+} // namespace llvm
 
 #endif

include/llvm/LinkAllPasses.h

@@ -188,6 +188,6 @@ namespace {
       (void) llvm::sys::RunningOnValgrind();
     }
   } ForcePassLinking; // Force link by creating a global definition.
-}
+} // namespace
 
 #endif

utils/unittest/googletest/include/gtest/internal/gtest-internal.h

@@ -113,7 +113,7 @@ public:
     : std::ostream(os.rdbuf()), ros_(*this) {}
   operator raw_ostream&() { return ros_; }
 };
-}
+} // namespace llvm
 template <typename T>
 inline void GTestStreamToHelper(std::ostream* os, const T& val) {
   llvm::convertible_fwd_ostream cos(*os);