Change QualType::getTypePtr() to return a const pointer, then change a
thousand other things which were (generally inadvertantly) relying on that.

llvm-svn: 123814
diff --git a/clang/lib/CodeGen/CGDebugInfo.cpp b/clang/lib/CodeGen/CGDebugInfo.cpp
index ba0c8ca..fb851dd 100644
--- a/clang/lib/CodeGen/CGDebugInfo.cpp
+++ b/clang/lib/CodeGen/CGDebugInfo.cpp
@@ -1307,11 +1307,9 @@
     case Type::TemplateSpecialization:
       T = cast<TemplateSpecializationType>(T)->desugar();
       break;
-    case Type::TypeOfExpr: {
-      TypeOfExprType *Ty = cast<TypeOfExprType>(T);
-      T = Ty->getUnderlyingExpr()->getType();
+    case Type::TypeOfExpr:
+      T = cast<TypeOfExprType>(T)->getUnderlyingExpr()->getType();
       break;
-    }
     case Type::TypeOf:
       T = cast<TypeOfType>(T)->getUnderlyingType();
       break;