Zlib InflateRaw null reference

[headlessme]

• Version: v5.10.0 (also seen on 4.3.0)
• Platform: Darwin Kernel Version 14.5.0
• Subsystem: zlib

Zlib references a null object on close after an error:

var zlib = require('zlib');
var inflate = zlib.createInflateRaw(15);
inflate.on('error', function(e) {  });
inflate.write('something invalid');
setTimeout(function(){
    inflate.close();  
}, 100);

Output:

$ node inflate-close.js 
zlib.js:465
  this._handle.close();
              ^

TypeError: Cannot read property 'close' of null
    at InflateRaw.Zlib.close (zlib.js:465:15)
    at null._onTimeout (/tmp/inflate-close.js:8:13)
    at Timer.listOnTimeout (timers.js:92:15)

See websockets/ws#664

[headlessme]

Looks like it's already being fixed: #5982