message: Fix overflow bug in analyzepsbt fee: CAmount instead of int
diff: @@ -1981,8 +1981,8 @@ UniValue analyzepsbt(const JSONRPCRequest& request)
  }
  if (calc_fee) {
  // Get the output amount
  - CAmount out_amt = std::accumulate(psbtx.tx->vout.begin(), psbtx.tx->vout.end(), 0,
  - [](int a, const CTxOut& b) {
  + CAmount out_amt = std::accumulate(psbtx.tx->vout.begin(), psbtx.tx->vout.end(), CAmount(0),
  + [](CAmount a, const CTxOut& b) {
  return a += b.nValue;
  }
  );
  