Fixed compilation warning in pre-re

Fixes #1627
Thanks to @keitenai

src/map/battle.c

@@ -4344,7 +4344,6 @@ struct Damage battle_attack_sc_bonus(struct Damage wd, struct block_list *src, s
 	struct map_session_data *sd = BL_CAST(BL_PC, src);
 	struct status_change *sc = status_get_sc(src);
 	struct status_data *sstatus = status_get_status_data(src);
-	struct status_data *tstatus = status_get_status_data(target);
 	int inf3 = skill_get_inf3(skill_id);
 
 	// Kagerou/Oboro Earth Charm effect +15% wATK
@@ -4369,6 +4368,8 @@ struct Damage battle_attack_sc_bonus(struct Damage wd, struct block_list *src, s
 		if (sc->data[SC_MADNESSCANCEL])
 			ATK_ADD(wd.equipAtk, wd.equipAtk2, 100);
 		if (sc->data[SC_GATLINGFEVER]) {
+			struct status_data *tstatus = status_get_status_data(target);
+			
 			if (tstatus->size == SZ_SMALL) {
 				ATK_ADD(wd.equipAtk, wd.equipAtk2, 10 * sc->data[SC_GATLINGFEVER]->val1);
 			} else if (tstatus->size == SZ_MEDIUM) {