fix attack roll back for EFFECT_MUST_ATTACK

processor.cpp

@@ -2620,6 +2620,7 @@ int32 field::process_battle_command(uint16 step) {
 		return FALSE;
 	}
 	case 8: {
+		core.attack_cancelable = TRUE;
 		pduel->write_buffer8(MSG_ATTACK);
 		pduel->write_buffer32(core.attacker->get_info_location());
 		if(core.attack_target) {
@@ -2703,6 +2704,7 @@ int32 field::process_battle_command(uint16 step) {
 			add_process(PROCESSOR_SELECT_YESNO, 0, 0, 0, infos.turn_player, 30);
 		else {
 			returns.ivalue[0] = TRUE;
+			core.attack_cancelable = FALSE;
 		}
 		return FALSE;
 	}
@@ -2711,7 +2713,6 @@ int32 field::process_battle_command(uint16 step) {
 		if(returns.ivalue[0]) {
 			core.units.begin()->arg1 = TRUE;
 			core.units.begin()->arg3 = FALSE;
-			core.attack_cancelable = TRUE;
 			core.units.begin()->step = 3;
 		}
 		return FALSE;