move constructor for abstract class in protected

src/BulletCollision/BroadphaseCollision/btBroadphaseInterface.h

@@ -41,6 +41,10 @@ struct	btBroadphaseRayCallback : public btBroadphaseAabbCallback
 	btScalar		m_lambda_max;
 
 	virtual ~btBroadphaseRayCallback() {}
+	
+protected:
+    
+    btBroadphaseRayCallback() {}
 };
 
 #include "LinearMath/btVector3.h"

src/BulletCollision/BroadphaseCollision/btOverlappingPairCallback.h

@@ -23,6 +23,9 @@ struct  btBroadphasePair;
 ///The btOverlappingPairCallback class is an additional optional broadphase user callback for adding/removing overlapping pairs, similar interface to btOverlappingPairCache.
 class btOverlappingPairCallback
 {
+protected:
+    btOverlappingPairCallback() {}
+    
 public:
 	virtual ~btOverlappingPairCallback()
 	{