Corrected Earth Shaker wall checks (fixes #1447)

* Earth Shaker is no longer able to hit targets behind walls.

src/map/skill.c

@@ -5517,7 +5517,7 @@ int skill_castend_damage_id (struct block_list* src, struct block_list *bl, uint
 			if (tsc && tsc->data[SC__SHADOWFORM] && rnd() % 100 < 100 - tsc->data[SC__SHADOWFORM]->val1 * 10) // [100 - (Skill Level x 10)] %
 				status_change_end(bl, SC__SHADOWFORM, INVALID_TIMER);
 		} else {
-			map_foreachinrange(skill_area_sub, bl, skill_get_splash(skill_id, skill_lv), BL_CHAR|BL_SKILL, src, skill_id, skill_lv, tick, flag|BCT_ENEMY|SD_SPLASH|1, skill_castend_damage_id);
+			map_foreachinshootrange(skill_area_sub, bl, skill_get_splash(skill_id, skill_lv), BL_CHAR|BL_SKILL, src, skill_id, skill_lv, tick, flag|BCT_ENEMY|SD_SPLASH|1, skill_castend_damage_id);
 			clif_skill_damage(src, src, tick, status_get_amotion(src), 0, -30000, 1, skill_id, skill_lv, DMG_SKILL);
 		}
 		break;