Follow up 9a52768f6fb35637edac233f85d7a857f852376e (#1595)

* Fixed #1594, compile warning

Signed-off-by: Cydh Ramdh <cydh@pservero.com>

src/map/clif.h

@@ -30,6 +30,7 @@ struct guild;
 struct battleground_data;
 struct quest;
 struct party_booking_ad_info;
+enum e_party_member_withdraw;
 #include <stdarg.h>
 
 enum { // packet DB