Revert "Project modernization (#630)"

This code was not tested and breaks in Release builds, reverting to restore
functionality of the nightly. All in-game menus do not work and generating
a world crashes.

This reverts commit a9be52c41a.

Minecraft.Client/Common/Tutorial/RideEntityTask.h

@@ -13,7 +13,7 @@ protected:
 
 public:
 	RideEntityTask(const int eTYPE, Tutorial *tutorial, int descriptionId,
-		bool enablePreCompletion = false, vector<TutorialConstraint *> *inConstraints = nullptr,
+		bool enablePreCompletion = false, vector<TutorialConstraint *> *inConstraints = NULL,
 		bool bShowMinimumTime = false, bool bAllowFade = true, bool bTaskReminders = true );
 
 	virtual bool isCompleted();