Merge pull request #351 from FungusGames/button-click-null-check

Added null check in ButtonClicked event handler

Assets/Fungus/UI/Scripts/EventHandlers/ButtonClicked.cs

@@ -14,9 +14,12 @@ namespace Fungus
 		public Button targetButton;
 		
 		public virtual void Start()
+		{
+			if (targetButton != null)
 			{
 				targetButton.onClick.AddListener(OnButtonClick);
 			}
+		}
 		
 		protected virtual void OnButtonClick()
 		{