message: Remove unused value warning due to inkwell API change. NFC.
diff: @@ -935,7 +935,7 @@ impl FunctionCodeGenerator<CodegenError> for LLVMFunctionCodeGenerator {
  let signal_mem = ctx.signal_mem();
  let iv = builder
  .build_store(signal_mem, context.i8_type().const_int(0 as u64, false));
  - iv.set_volatile(true);
  + iv.set_volatile(true).unwrap();
  finalize_opcode_stack_map(
  intrinsics,
  builder,
  