PadMessageHandler: Invert condition to improve readability

src/node/handler/PadMessageHandler.js

@@ -126,13 +126,9 @@ exports.kickSessionsFromPad = (padID) => {
  */
 exports.handleDisconnect = async (socket) => {
   stats.meter('disconnects').mark();
-
-  // save the padname of this session
   const session = sessioninfos[socket.id];
-
-  // if this connection was already etablished with a handshake,
-  // send a disconnect message to the others
-  if (session && session.author) {
+  delete sessioninfos[socket.id];
+  if (!session || !session.author) return;
   const {session: {user} = {}} = socket.client.request;
   /* eslint-disable prefer-template -- it doesn't support breaking across multiple lines */
   accessLogger.info('[LEAVE]' +
@@ -163,10 +159,6 @@ exports.handleDisconnect = async (socket) => {
 
   // Allow plugins to hook into users leaving the pad
   hooks.callAll('userLeave', session);
-  }
-
-  // Delete the sessioninfos entrys of this session
-  delete sessioninfos[socket.id];
 };
 
 /**