Race ID 4 checkpoint count is incorrect

Current Behaviour:
The placement of the final checkpoint for Race ID 4 suggests the race is supposed to end at Checkpoint 16 and it does, as intended but the counter shows there are 17 checkpoints in total. The race finishes when you reach the 16th checkpoint, hence the counter is misleading.

Credits to Mihael Bourne [Fruk] for reporting this bug on forums originally.

Expected Behaviour:
The counter during the race should show the correct number of 16 checkpoints.

Steps to Reproduce:

1. Start race ID 4
2. Play until the finish and you'll see the current behavior.