unnecessary if statement

lib/peer.js

@@ -221,15 +221,13 @@ Peer.prototype._abort = function(type, message) {
 
 Peer.prototype._cleanup = function() {
   var self = this;
-  if (!!this.managers) {
-    var peers = Object.keys(this.managers);
-    for (var i = 0, ii = peers.length; i < ii; i++) {
-      this.managers[peers[i]].close();
-    }
-    util.setZeroTimeout(function(){
-      self.disconnect();
-    });
+  var peers = Object.keys(this.managers);
+  for (var i = 0, ii = peers.length; i < ii; i++) {
+    this.managers[peers[i]].close();
   }
+  util.setZeroTimeout(function(){
+    self.disconnect();
+  });
   this.emit('close');
 };