[clang] [CodeGen][ObjCGNU] Replace PointerType::getUnqual(Type) with opaque pointer version (NFC) (PR #128715)

[Mats Jun Larsen via cfe-commits]

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@@ -2284,10 +2284,12 @@ CGObjCGNU::CGObjCGNU(CodeGenModule &cgm, unsigned runtimeABIVersion,
   BoolTy = CGM.getTypes().ConvertType(CGM.getContext().BoolTy);
 
   Int8Ty = llvm::Type::getInt8Ty(VMContext);
+
+  PtrTy = llvm::PointerType::getUnqual(cgm.getLLVMContext());
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junlarsen wrote:

Simply re-ordered initialization here so the other types can refer to PtrTy

https://github.com/llvm/llvm-project/pull/128715