message: [fix] fix gas consume of native_destroy_signer
  Closes:
diff: @@ -32,6 +32,6 @@ pub fn native_destroy_signer(
  debug_assert!(ty_args.is_empty());
  debug_assert!(arguments.len() == 1);
  - let cost = native_gas(context.cost_table(), NativeCostIndex::CREATE_SIGNER, 0);
  + let cost = native_gas(context.cost_table(), NativeCostIndex::DESTROY_SIGNER, 0);
  Ok(NativeResult::ok(cost, vec![]))
  }
  