Fix compatibility with Node.js master

lib/spdy/server.js

@@ -189,6 +189,14 @@ proto._onStream = function _onStream (stream) {
     socket = new net.Socket(socketOptions)
   }
 
+  // This is needed because the `error` listener, added by the default
+  // `connection` listener, no longer has bound arguments. It relies instead
+  // on the `server` property of the socket. See https://github.com/nodejs/node/pull/11926
+  // for more details.
+  // This is only done for Node.js >= 4 in order to not break backwards
+  // compatibility with older versions of the platform.
+  if (process.versions.modules >= 46) { socket.server = this }
+
   handle.assignSocket(socket)
 
   // For v0.8