message: wallet: update stored witness in AddToWallet
  Replace witness-stripped wallet transactions with full transactions;
  this can happen when upgrading from a pre-segwit wallet to a segwit-
  aware wallet.
  Github-Pull:
  Rebased-From:
diff: @@ -969,6 +969,15 @@ bool CWallet::AddToWallet(const CWalletTx& wtxIn, bool fFlushOnClose)
  wtx.fFromMe = wtxIn.fFromMe;
  fUpdated = true;
  }
  + // If we have a witness-stripped version of this transaction, and we
  + // see a new version with a witness, then we must be upgrading a pre-segwit
  + // wallet. Store the new version of the transaction with the witness,
  + // as the stripped-version must be invalid.
  + // TODO: Store all versions of the transaction, instead of just one.
  + if (wtxIn.tx->HasWitness() && !wtx.tx->HasWitness()) {
  + wtx.SetTx(wtxIn.tx);
  + fUpdated = true;
  + }
  }
  //// debug print
  