Added some missing SetFallInformation calls

Port From (https://github.com/TrinityCore/TrinityCore/commit/cfefd27cb8171b7fe28781eb8f1d903272830f22)

Source/Game/Movement/Generators/WaypointMovement.cs

@@ -442,6 +442,7 @@ namespace Game.Movement
                 // this prevent cheating with landing  point at lags
                 // when client side flight end early in comparison server side
                 owner.StopMoving();
+                owner.SetFallInformation(0, owner.GetPositionZ());
             }
 
             owner.RemovePlayerFlag(PlayerFlags.TaxiBenchmark);

Source/Game/Movement/MotionMaster.cs

@@ -525,7 +525,10 @@ namespace Game.Movement
 
             // don't run spline movement for players
             if (_owner.IsTypeId(TypeId.Player))
+            {
+                _owner.ToPlayer().SetFallInformation(0, _owner.GetPositionZ());
                 return;
+            }
 
             MoveSplineInit init = new MoveSplineInit(_owner);
             init.MoveTo(_owner.GetPositionX(), _owner.GetPositionY(), tz, false);