Update how RegisterBruteForce.Fit works

[Eric Harper]

Change this function to a void.

bool good_fit = r.Fit(v2);

good_fit isn't used, but this line is required for the code to work.

[Bradley Dice]

Confirming this issue still exists. It should be a very simple fix. Just edit cpp/registration/brute_force.h and cpp/order/MatchEnv.cc.

[Bradley Dice]

Resolved in PR. Will merge soon.