Function onunpipe

packages/main/test/pages/diffable-html.js:6642–6650

(readable, unpipeInfo)

      dest.on('unpipe', onunpipe);
      function onunpipe(readable, unpipeInfo) {
        debug('onunpipe');
        if (readable === src) {
          if (unpipeInfo && unpipeInfo.hasUnpiped === false) {
            unpipeInfo.hasUnpiped = true;
            cleanup();
          }
        }
      }

      function onend() {
        debug('onend');