Use Sema's LocInfoType to pass and preserve type source info through the Parser.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@79395 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Sema/SemaCXXScopeSpec.cpp b/lib/Sema/SemaCXXScopeSpec.cpp
index 977aa0f..1889571 100644
--- a/lib/Sema/SemaCXXScopeSpec.cpp
+++ b/lib/Sema/SemaCXXScopeSpec.cpp
@@ -333,7 +333,7 @@
                                                     SourceLocation CCLoc) {
   NestedNameSpecifier *Prefix 
     = static_cast<NestedNameSpecifier *>(SS.getScopeRep());
-  QualType T = QualType::getFromOpaquePtr(Ty);
+  QualType T = GetTypeFromParser(Ty);
   return NestedNameSpecifier::Create(Context, Prefix, /*FIXME:*/false,
                                      T.getTypePtr());
 }