[PATCH] small fix for mpparse.c

Here's a very tiny bugfix for arch/i386/kernel/mpparse.c in the
2.4.19-pre2 kernel.  It fixes the problem if there is an error in the
MP_processor_info() function where the mpc_apicid value is greater than
MAX_APICS, then we need to decrement the number of valid processors
before we return (the number was just incremented before the check.)

The patch was written by James Cleverdon.

arch/i386/kernel/mpparse.c

@@ -232,6 +232,7 @@ void __init MP_processor_info (struct mpc_config_processor *m)
 	if (m->mpc_apicid > MAX_APICS) {
 		printk("Processor #%d INVALID. (Max ID: %d).\n",
 			m->mpc_apicid, MAX_APICS);
+		--num_processors;
 		return;
 	}
 	ver = m->mpc_apicver;