[clang] Clang / SemaHLSL: Fix unused variable in release build (PR #124398)

[Christoph Grüninger via cfe-commits]

https://github.com/gruenich created https://github.com/llvm/llvm-project/pull/124398

None

>From 29ced5f7bf64c4112879fdf9ed70abd1fc83bad4 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Christoph=20Gr=C3=BCninger?= <foss at grueninger.de>
Date: Sat, 25 Jan 2025 09:10:42 +0100
Subject: [PATCH] Clang / SemaHLSL: Fix unused variable in release build

---
 clang/lib/Sema/SemaHLSL.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/clang/lib/Sema/SemaHLSL.cpp b/clang/lib/Sema/SemaHLSL.cpp
index a7033cb54886a7..7ac9acd8314b76 100644
--- a/clang/lib/Sema/SemaHLSL.cpp
+++ b/clang/lib/Sema/SemaHLSL.cpp
@@ -423,7 +423,7 @@ static CXXRecordDecl *createHostLayoutStruct(Sema &S,
   LS->startDefinition();
 
   // copy base struct, create HLSL Buffer compatible version if needed
-  if (unsigned NumBases = StructDecl->getNumBases()) {
+  if ([[maybe_unused]] unsigned NumBases = StructDecl->getNumBases()) {
     assert(NumBases == 1 && "HLSL supports only one base type");
     CXXBaseSpecifier Base = *StructDecl->bases_begin();
     CXXRecordDecl *BaseDecl = Base.getType()->getAsCXXRecordDecl();