Now that DeclRefExpr accepts a NamedDecl, use a DeclRefExpr for when a CXXFieldDecl is referenced inside a method.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@58000 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/AST/Expr.cpp b/lib/AST/Expr.cpp
index 5c0e38c..6e62d09 100644
--- a/lib/AST/Expr.cpp
+++ b/lib/AST/Expr.cpp
@@ -325,7 +325,7 @@
 /// DeclCanBeLvalue - Determine whether the given declaration can be
 /// an lvalue. This is a helper routine for isLvalue.
 static bool DeclCanBeLvalue(const NamedDecl *Decl, ASTContext &Ctx) {
-  return isa<VarDecl>(Decl) || 
+  return isa<VarDecl>(Decl) || isa<CXXFieldDecl>(Decl) ||
     // C++ 3.10p2: An lvalue refers to an object or function.
     (Ctx.getLangOptions().CPlusPlus &&
      (isa<FunctionDecl>(Decl) || isa<OverloadedFunctionDecl>(Decl)));