message: Update imgSize to use size.x instead of size.y
  The value is used for an x coordinate, so presumably size.x was
  intended. In this case, all the images are square, so it won't be
  noticed, but may be relevant if image sizes ever change.
diff: @@ -39,7 +39,7 @@ RobotInspector::RobotInspector() :
  const int buttonHeight = mainFont.height() + padding;
  const int buttonOffsetY = buttonHeight + constants::MARGIN_TIGHT;
  - const int imgSize = robotImage(Robot::Type::Digger).size().y + padding;
  + const int imgSize = robotImage(Robot::Type::Digger).size().x + padding;
  mContentArea = {
  imgSize,
  