message: Calculate contentWidth and use to size window
diff: @@ -40,6 +40,7 @@ RobotInspector::RobotInspector() :
  const int buttonOffsetY = buttonHeight + constants::MARGIN_TIGHT;
  const int imageWidth = robotImage(Robot::Type::Digger).size().x + padding;
  + const int contentWidth = imageWidth + buttonWidth;
  mContentArea = {
  imageWidth,
  @@ -50,7 +51,7 @@ RobotInspector::RobotInspector() :
  if (mContentArea.width < buttonWidth) { mContentArea.width = buttonWidth; }
  - size({ buttonWidth + imageWidth + constants::MARGIN, 0 });
  + size({ contentWidth + constants::MARGIN, 0 });
  auto buttonPosition = Vector{ imageWidth, mContentArea.y + mContentArea.height + constants::MARGIN };
  