[clang] [HLSL] Fix for build break introduced by #85662 (PR #85839)

[Farzon Lotfi via cfe-commits]

farzonl wrote:

I'm confident this change fixes the build break:

```bash
python ../debug-llvm-build/bin/llvm-lit -sv clang/test/SemaHLSL/
llvm-lit: /mnt/DevDrive/projects/llvm-project/llvm/utils/lit/lit/llvm/config.py:502: note: using clang: /mnt/DevDrive/projects/debug-llvm-build/bin/clang

Testing Time: 0.67s

Total Discovered Tests: 43
  Passed           : 42 (97.67%)
  Expectedly Failed:  1 (2.33%)

python ../debug-llvm-build/bin/llvm-lit -sv clang/test/CodeGenHLSL/
llvm-lit: /mnt/DevDrive/projects/llvm-project/llvm/utils/lit/lit/llvm/config.py:502: note: using clang: /mnt/DevDrive/projects/debug-llvm-build/bin/clang

Testing Time: 0.88s

Total Discovered Tests: 63
  Passed: 63 (100.00%)

python ../debug-llvm-build/bin/llvm-lit -sv clang/test/Sema
llvm-lit: /mnt/DevDrive/projects/llvm-project/llvm/utils/lit/lit/llvm/config.py:502: note: using clang: /mnt/DevDrive/projects/debug-llvm-build/bin/clang

Testing Time: 26.09s

Total Discovered Tests: 979
  Unsupported:   1 (0.10%)
  Passed     : 978 (99.90%)
```

https://github.com/llvm/llvm-project/pull/85839