message: resolve compiler error
diff: @@ -8556,7 +8556,7 @@ int CWallet::NewExtKeyFromAccount(CWalletDB *pwdb, const CKeyID &idAccount, std:
  CExtKey evNewKey;
  uint32_t nOldGen = sekAccount->GetCounter(fHardened);
  - uint32_t nNewChildNo;
  + uint32_t nNewChildNo = 0;
  if (sekAccount->DeriveNextKey(evNewKey, nNewChildNo, fHardened) != 0)
  return errorN(1, "DeriveNextKey failed.");
  