[Sema] Fix -Wunused-variable in CreateBuiltinMatrixSubscriptExpr (NFC).

diff --git a/clang/lib/Sema/SemaExpr.cpp b/clang/lib/Sema/SemaExpr.cpp
index e177c9d..2221f98 100644 (file)
--- a/clang/lib/Sema/SemaExpr.cpp
+++ b/clang/lib/Sema/SemaExpr.cpp
@@ -4737,6 +4737,7 @@ ExprResult Sema::CreateBuiltinMatrixSubscriptExpr(Expr *Base, Expr *RowIdx,
     bool ConversionOk = tryConvertToTy(*this, Context.getSizeType(), &ConvExpr);
     assert(ConversionOk &&
            "should be able to convert any integer type to size type");
+    (void)ConversionOk;
     return ConvExpr.get();
   };