Other tidy fix

src/targets/gpu/mlir.cpp

@@ -604,10 +604,17 @@ std::string dump_mlir(const module&) { return {}; }
 
 code_object_op compile_mlir(const context&, const module&) { return {}; }
 
+template<class T>
+void use(T&) {}
+
 instruction_ref
 // cppcheck-suppress funcArgNamesDifferent
-insert_mlir(module& m, instruction_ref, code_object_op, const std::vector<instruction_ref>&) // NOLINT
+insert_mlir(module& m,
+            instruction_ref,
+            code_object_op co,
+            const std::vector<instruction_ref>&)
 {
+    use(co);
     return m.end();
 }