message: Silence false positive GCC warning
diff: @@ -3385,7 +3385,7 @@ static RPCHelpMan rescanblockchain()
  }
  int start_height = 0;
  - Optional<int> stop_height;
  + Optional<int> stop_height = MakeOptional(false, int());
  uint256 start_block;
  {
  LOCK(pwallet->cs_wallet);
  