Fix CPU Slipstream Mission Scoring "Bug" [Ro]

[_Ro]

Fix CPU Slipstream Mission Scoring "Bug" [Ro]

This code fixes a "bug" where when playing a Slipstream Mission, you'll score when a CPU slipstreams. With this code, it will now only score when you slipstream.

NTSC-U
C2580BAC 00000004
A0050B9E 819B0000
818C0004 818C0014
718C0002 40820008
38000000 00000000

PAL
C25873D0 00000004
A0050B9E 819B0000
818C0004 818C0014
718C0002 40820008
38000000 00000000

NTSC-J
C2586D50 00000004
A0050B9E 819B0000
818C0004 818C0014
718C0002 40820008
38000000 00000000

NTSC-K
C2575428 00000004
A0050B9E 819B0000
818C0004 818C0014
718C0002 40820008
38000000 00000000

Code creator: Ro