[clang] [HLSL] Bug fix crash using Array Parameters when De-sugaring is the same as canonicalizing (PR #127670)

[Deric Cheung via cfe-commits]

https://github.com/Icohedron commented:

Looks fine to me, but this change doesn't only affect HLSL does it? 
The function `getArrayParameterType` in `ASTContext.cpp` doesn't look like it is HLSL-specific.
I wonder if a similar bug occurs within C/C++.

https://github.com/llvm/llvm-project/pull/127670