[clang] [HLSL] Constant buffer layout struct update (PR #124840)

[Justin Bogner via cfe-commits]

================
@@ -14183,6 +14183,13 @@ void Sema::ActOnUninitializedDecl(Decl *RealDecl) {
     if (getLangOpts().OpenCL &&
         Var->getType().getAddressSpace() == LangAS::opencl_local)
       return;
+
+    // In HLSL, objects in the hlsl_constat address space are initialized
+    // externaly, so don't synthesize an implicit initializer.
----------------
bogner wrote:

Couple of typos
```suggestion
    // In HLSL, objects in the hlsl_constant address space are initialized
    // externally, so don't synthesize an implicit initializer.
```

https://github.com/llvm/llvm-project/pull/124840