Use Sema::isDeclInScope instead of IdentifierResolver::isDeclInScope.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@56042 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Sema/SemaDeclCXX.cpp b/lib/Sema/SemaDeclCXX.cpp
index cb8ffd3..85097ca 100644
--- a/lib/Sema/SemaDeclCXX.cpp
+++ b/lib/Sema/SemaDeclCXX.cpp
@@ -502,8 +502,7 @@
         LookupDecl(II, Decl::IDNS_Tag | Decl::IDNS_Ordinary, DeclRegionScope,
                    /*enableLazyBuiltinCreation=*/false);
 
-    if (PrevDecl &&
-        IdResolver.isDeclInScope(PrevDecl, CurContext, DeclRegionScope)) {
+    if (PrevDecl && isDeclInScope(PrevDecl, CurContext, DeclRegionScope)) {
       if (NamespaceDecl *OrigNS = dyn_cast<NamespaceDecl>(PrevDecl)) {
         // This is an extended namespace definition.
         // Attach this namespace decl to the chain of extended namespace