[clang] [Clang][HLSL] Fix struct semantic store (PR #181681)

[Nathan Gauër via cfe-commits]

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@@ -880,6 +880,7 @@ CGHLSLRuntime::handleStructSemanticStore(
     llvm::Value *Extract = B.CreateExtractValue(Source, I);
     AttrBegin =
         handleSemanticStore(B, FD, Extract, *FieldDecl, AttrBegin, AttrEnd);
+    ++FieldDecl;
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Keenuts wrote:

right, might be better, done, thanks!

https://github.com/llvm/llvm-project/pull/181681