Bug in realname_make_name() update query.

The query currently looks like:

db_query("UPDATE {realname} SET realname='s' where uid=%d", $result,$account->uid);

I think it's supposed to look like (Not the '%' now in realname=):

db_query("UPDATE {realname} SET realname='%s' where uid=%d", $result,$account->uid);

Trivial change. Don't have time to make a patch right now, will try and make one later.