[clang-repl] Minor cleanups in Value.cpp (NFC) (#87066)

clang/lib/Interpreter/Value.cpp

@@ -1,4 +1,4 @@
-//===--- Interpreter.h - Incremental Compiation and Execution---*- C++ -*-===//
+//===------------ Value.cpp - Definition of interpreter value -------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.
@@ -22,8 +22,6 @@
 #include <cstdint>
 #include <utility>
 
-using namespace clang;
-
 namespace {
 
 // This is internal buffer maintained by Value, used to hold temporaries.
@@ -61,7 +59,7 @@ class ValueStorage {
   void Release() {
     assert(RefCnt > 0 && "Can't release if reference count is already zero");
     if (--RefCnt == 0) {
-      // We hace a non-trivial dtor.
+      // We have a non-trivial dtor.
       if (Dtor && IsAlive()) {
         assert(Elements && "We at least should have 1 element in Value");
         size_t Stride = AllocSize / Elements;
@@ -97,6 +95,8 @@ class ValueStorage {
 };
 } // namespace
 
+namespace clang {
+
 static Value::Kind ConvertQualTypeToKind(const ASTContext &Ctx, QualType QT) {
   if (Ctx.hasSameType(QT, Ctx.VoidTy))
     return Value::K_Void;
@@ -265,3 +265,5 @@ void Value::print(llvm::raw_ostream &Out) const {
   assert(OpaqueType != nullptr && "Can't print default Value");
   Out << "Not implement yet.\n";
 }
+
+} // namespace clang