* Applying SMF 2.0.8 patch for member search. (Memberlist.php)

@ Note: of course, I'm not including the typo in that patch ($serach, REALLY??).

@ Note: if index.php looks for set_magic_quotes_*'s existence, why shouldn't this one occurrence do the same..? So I'm doing it.

@ Note: I'm not even sure there's a point in checking for slashes here anyway, since this field isn't being reused later. Leaving it in only because I have limited time to spend on this.