title: RCTWebSocket - Ignoring return value of function declared with warn_unused_result attribute
body: <p>I am currently working on a React Native project. Literally, out of nowhere, I just began to experience this error in XCode.  </p>
  
  <p>I've done a good amount of Googling to no avail. Has anyone experienced this? More importantly, does anyone have a resolution?</p>