Don't log blocked messages when guestWindow is null

lib/browser/guest-window-manager.js

@@ -130,7 +130,9 @@ ipcMain.on('ELECTRON_GUEST_WINDOW_MANAGER_WINDOW_OPEN', function (event, url, fr
 
 ipcMain.on('ELECTRON_GUEST_WINDOW_MANAGER_WINDOW_CLOSE', function (event, guestId) {
   const guestWindow = getGuestWindow(guestId)
-  if (guestWindow != null && canAccessWindow(event.sender, guestWindow.webContents)) {
+  if (guestWindow == null) return
+
+  if (canAccessWindow(event.sender, guestWindow.webContents)) {
     guestWindow.destroy()
   } else {
     console.error(`Blocked ${event.sender.getURL()} from closing its opener.`)
@@ -139,10 +141,15 @@ ipcMain.on('ELECTRON_GUEST_WINDOW_MANAGER_WINDOW_CLOSE', function (event, guestI
 
 ipcMain.on('ELECTRON_GUEST_WINDOW_MANAGER_WINDOW_METHOD', function (event, guestId, method, ...args) {
   const guestWindow = getGuestWindow(guestId)
-  if (guestWindow != null && canAccessWindow(event.sender, guestWindow.webContents)) {
+  if (guestWindow == null) {
+    event.returnValue = null
+    return
+  }
+
+  if (canAccessWindow(event.sender, guestWindow.webContents)) {
     event.returnValue = guestWindow[method].apply(guestWindow, args)
   } else {
-    console.error(`Blocked ${event.sender.getURL()} from calling ${method} of its opener.`)
+    console.error(`Blocked ${event.sender.getURL()} from calling ${method} on its opener.`)
     event.returnValue = null
   }
 })
@@ -153,7 +160,7 @@ ipcMain.on('ELECTRON_GUEST_WINDOW_MANAGER_WINDOW_POSTMESSAGE', function (event,
 
   // The W3C does not seem to have word on how postMessage should work when the
   // origins do not match, so we do not do |canAccessWindow| check here since
-  // postMessage across origins is usefull and not harmful.
+  // postMessage across origins is useful and not harmful.
   if (guestContents.getURL().indexOf(targetOrigin) === 0 || targetOrigin === '*') {
     const sourceId = event.sender.id
     guestContents.send('ELECTRON_GUEST_WINDOW_POSTMESSAGE', sourceId, message, sourceOrigin)
@@ -162,9 +169,11 @@ ipcMain.on('ELECTRON_GUEST_WINDOW_MANAGER_WINDOW_POSTMESSAGE', function (event,
 
 ipcMain.on('ELECTRON_GUEST_WINDOW_MANAGER_WEB_CONTENTS_METHOD', function (event, guestId, method, ...args) {
   const guestContents = webContents.fromId(guestId)
-  if (guestContents != null && canAccessWindow(event.sender, guestContents)) {
+  if (guestContents == null) return
+
+  if (canAccessWindow(event.sender, guestContents)) {
     guestContents[method].apply(guestContents, args)
   } else {
-    console.error(`Blocked ${event.sender.getURL()} from calling ${method} of its opener.`)
+    console.error(`Blocked ${event.sender.getURL()} from calling ${method} on its opener.`)
   }
 })