message: keyOrigin size validation fix.
diff: @@ -76,7 +76,7 @@ std::string DecodeDumpString(const std::string& str)
  bool IsStakingDerPath(KeyOriginInfo keyOrigin)
  {
  - return keyOrigin.path[3] == (2 | BIP32_HARDENED_KEY_LIMIT);
  + return keyOrigin.path.size() > 3 && keyOrigin.path[3] == (2 | BIP32_HARDENED_KEY_LIMIT);
  }
  UniValue importprivkey(const UniValue& params, bool fHelp)
  