[clang] [clang-linker-wrapper] Re-use type returned from 'PointerType::getUnqual(C)' (NFC) (PR #73374)

[Joseph Huber via cfe-commits]

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@@ -458,44 +459,39 @@ void createRegisterFatbinFunction(Module &M, GlobalVariable *FatbinDesc,
   DtorFunc->setSection(".text.startup");
 
   // Get the __cudaRegisterFatBinary function declaration.
-  auto *RegFatTy = FunctionType::get(PointerType::getUnqual(C)->getPointerTo(),
-                                     PointerType::getUnqual(C),
+  auto *RegFatTy = FunctionType::get(PtrTy, PtrTy,
                                      /*isVarArg*/ false);
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jhuber6 wrote:

Can you fix these while you're at it, they should use the LLVM-style block comments.
```suggestion
                                     /*isVarArg=*/false);
```

https://github.com/llvm/llvm-project/pull/73374