MathLiniarF does not use xCap

[olafmersmann]

Variable xCap is assigned but never used in in MathLiniarF.

I think the function was meant to be:

float MathLiniarF(const float yMinimum, const float yMaximum, 
                  const float xMinimum, const float xMaximum, 
                  const float xValue)
{
        const float xCap = xValue > xMinimum ? (xValue < xMaximum ? xValue : xMaximum) : xMinimum;
        const float slope = (xMaximum - xMinimum) / (yMaximum - yMinimum);

        return slope * (xCap - xMinimum) + yMinimum;
}