  destroy() {
    if (this.outgoing.state === 'open' || this.outgoing.state === 'eof') {
      this.outgoing.state = 'closing';
      this._protocol.channelClose(this.outgoing.id);
    }
  }
The software constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.