fix objects colliding with its own collision boxes

src/content_sao.cpp

@@ -502,7 +502,7 @@ void LuaEntitySAO::step(float dtime, bool send_recommended)
 			v3f p_acceleration = m_acceleration;
 			moveresult = collisionMoveSimple(m_env,m_env->getGameDef(),
 					pos_max_d, box, stepheight, dtime,
-					p_pos, p_velocity, p_acceleration);
+					p_pos, p_velocity, p_acceleration,this);
 			// Apply results
 			m_base_position = p_pos;
 			m_velocity = p_velocity;