Compile Errors In OperationQueues

iOS/OperationQueues/OperationQueues/FaviconTableViewCell.swift

@@ -26,30 +26,32 @@ didSet {
     var request = NSURLRequest(URL: self.url!)
 
     // Display this text
-    self.textLabel.text = self.url?.host
+    self.textLabel?.text = self.url?.host
 
     // Fire off the request, and give it a completion handler
     // plus a queue to run on
     NSURLConnection.sendAsynchronousRequest(request,
         queue: self.operationQueue!,
         completionHandler: {
             (response: NSURLResponse!, data: NSData!, error: NSError!) in
-
-            // The 'data' variable now contains the loaded data;
-            // turn it into an image
-            var image = UIImage(data: data)
-
-            // Updates to the UI have to be done on the main queue.
-            NSOperationQueue.mainQueue().addOperationWithBlock() {
+
+            if data != nil {
+                // The 'data' variable now contains the loaded data;
+                // turn it into an image
+                var image = UIImage(data: data)
 
-                // Give the image view the loaded image
-                self.imageView.image = image
-
-                // The image view has probably changed size because of
-                // the new image, so we need to re-layout the cell.
-                self.setNeedsLayout()
+                // Updates to the UI have to be done on the main queue.
+                NSOperationQueue.mainQueue().addOperationWithBlock() {
+
+                    // Give the image view the loaded image
+                    self.imageView?.image = image
+
+                    // The image view has probably changed size because of
+                    // the new image, so we need to re-layout the cell.
+                    self.setNeedsLayout()
+                }
             }
-                
+
         })
 
 }