Build fails on OpenBSD 7.1 about concord

[tarbomb]

So first things first, looking at line 5794 of discord_codecs.h, it seems like the token pasting is not being performed.

void strings##_cleanup(struct strings *self);

I decided to try running the Makefile in gencodecs/ manually, got the same error. Then, I ran it as such:
make CPP="cc -E", and it built fine. We may want to change the default CPP variable from cpp to cc -E, perhaps?

[lcsmuller]

Fixed at d703210! Thanks for the heads up.