workaround: use STOC_HS_PlayerEnter_size

gframe/duelclient.cpp

@@ -818,11 +818,11 @@ void DuelClient::HandleSTOCPacketLan(unsigned char* data, int len) {
 		break;
 	}
 	case STOC_HS_PLAYER_ENTER: {
-		if (len < 1 + (int)sizeof(STOC_HS_PlayerEnter))
+		if (len < 1 + STOC_HS_PlayerEnter_size)
 			return;
 		soundManager.PlaySoundEffect(SOUND_PLAYER_ENTER);
 		STOC_HS_PlayerEnter packet;
-		std::memcpy(&packet, pdata, sizeof packet);
+		std::memcpy(&packet, pdata, STOC_HS_PlayerEnter_size);
 		const auto* pkt = &packet;
 		if(pkt->pos > 3)
 			break;

gframe/network.h

@@ -158,10 +158,11 @@ constexpr int SIZE_STOC_CHAT = (LEN_CHAT_PLAYER + LEN_CHAT_MSG) * sizeof(uint16_
 struct STOC_HS_PlayerEnter {
 	uint16_t name[20];
 	unsigned char pos;
-	unsigned char padding;	// only for padding
+	// byte padding[1]
 };
 check_trivially_copyable(STOC_HS_PlayerEnter);
-static_assert(sizeof(STOC_HS_PlayerEnter) == 42, "size mismatch: STOC_HS_PlayerEnter");
+//static_assert(sizeof(STOC_HS_PlayerEnter) == 42, "size mismatch: STOC_HS_PlayerEnter");
+constexpr int STOC_HS_PlayerEnter_size = 41;	//workwround
 
 struct STOC_HS_PlayerChange {
 	//pos<<4 | state