Possible bug in `bounced<TokenTransferInternal>` receiver

[anton-trunov]

Duplicate self.balancereference:

jetton/sources/jetton_wallet.tact

Line 139 in 543803a

self.balance += self.balance + msg.amount;

bounced(msg: bounced<TokenTransferInternal>){
    self.balance += self.balance + msg.amount;
}

Pointed out by Alexey Malanov.

[Shvandre]

Oh, you are 100% right, serious typo.

[anton-trunov]

Oh, you are 100% right, serious typo.

which shows we need to increase test coverage