Buildfix: proper constructor declaration for LLHUDRenderNotifier

indra/newview/llavatarrendernotifier.h

@@ -114,10 +114,10 @@ class LLAvatarRenderNotifier : public LLSingleton<LLAvatarRenderNotifier>
 // Class to notify user about heavy set of HUD
 class LLHUDRenderNotifier : public LLSingleton<LLHUDRenderNotifier>
 {
-public:
-    LLHUDRenderNotifier();
+    LLSINGLETON(LLHUDRenderNotifier);
     ~LLHUDRenderNotifier();
 
+public:
     void updateNotificationHUD(hud_complexity_list_t complexity);
     bool isNotificationVisible();