Changes from Ensiform:

- In G_AddBot, try to allocate clientNum before doing anything else.
- In G_AddBot, don't set SVF_BOT and inuse. It's done in ClientConnect, plus inuse causes ClientDisconnect to be run for no reason.
- In G_AddBot, only set skill in bot useinfo once.
- Avoid using cl->ps.clientNum to check if cl is a bot.

code/game/g_main.c

@@ -1231,7 +1231,7 @@ void CheckIntermissionExit( void ) {
 		if ( cl->pers.connected != CON_CONNECTED ) {
 			continue;
 		}
-		if ( g_entities[cl->ps.clientNum].r.svFlags & SVF_BOT ) {
+		if ( g_entities[i].r.svFlags & SVF_BOT ) {
 			continue;
 		}