add optionals as return value

LiquipediaMenu/StatusBarController.swift

@@ -8,7 +8,7 @@
 
 import Cocoa
 
-class StatusBarController: NSObject {
+class StatusBarController: NSObject, NSMenuDelegate {
     @IBOutlet weak var statusBar: NSMenu!
     let statusItem = NSStatusBar.system.statusItem(withLength: NSStatusItem.variableLength)
     let matchesAPI = MatchesAPI()
@@ -27,17 +27,18 @@ class StatusBarController: NSObject {
         statusBar.addItem(withTitle: "Refresh", action: #selector(generateMenu), keyEquivalent: "")
         statusBar.addItem(NSMenuItem.separator())
         
-        matches = matchesAPI.fetchMatches(for: "dota2")
-        for match in matches {
-            let myItem = NSMenuItem(title: match.league, action: nil, keyEquivalent: "")
-            statusBar.addItem(myItem)
+        if let matches = matchesAPI.fetchMatches(for: "dota2") {
+            for match in matches {
+                let myItem = NSMenuItem(title: match.league, action: nil, keyEquivalent: "")
+                statusBar.addItem(myItem)
+            }
+            
+            statusBar.addItem(NSMenuItem.separator())
+            statusBar.addItem(withTitle: "Quit", action: #selector(quitClicked), keyEquivalent: "")
         }
-        
-        statusBar.addItem(NSMenuItem.separator())
-        statusBar.addItem(withTitle: "Quit", action: #selector(quitClicked), keyEquivalent: "")
     }
     
-    @objc func quitClicked() {
+    @objc func quitClicked(_ sender: NSMenuItem) {
         NSApplication.shared.terminate(self)
     }
 }