Fix macOS compile

src/globalshortcuts/globalshortcutsbackend-kde.h

@@ -43,8 +43,9 @@ class GlobalShortcutsBackendKDE : public GlobalShortcutsBackend {
  public:
   explicit GlobalShortcutsBackendKDE(GlobalShortcutsManager *parent);
 
- protected:
   bool IsAvailable() override;
+
+ protected:
   bool DoRegister() override;
   void DoUnregister() override;
 

src/globalshortcuts/globalshortcutsbackend-macos.h

@@ -43,14 +43,16 @@ class GlobalShortcutsBackendMacOS : public GlobalShortcutsBackend {
   explicit GlobalShortcutsBackendMacOS(GlobalShortcutsManager* parent);
   virtual ~GlobalShortcutsBackendMacOS();
 
+  bool IsAvailable() override { return true; }
+
   bool IsAccessibilityEnabled() const;
   void ShowAccessibilityDialog();
 
   void MacMediaKeyPressed(int key);
 
  protected:
-  bool DoRegister();
-  void DoUnregister();
+  bool DoRegister() override;
+  void DoUnregister() override;
 
  private:
   bool KeyPressed(const QKeySequence &sequence);