Fix colors error when set popover.tint = FPPopoverWhiteTint;

[bluedeep]

Fix colors error when set popover.tint = FPPopoverWhiteTint;

[eventomer]

else if(self.tint == FPPopoverWhiteTint)
{
    colors[0] = colors[1] = colors[2] = 1.0;
    colors[3] = colors[4] = colors[5] = 1.0;
    colors[6] = colors[7] = 1.0;
}

instead of

else if(self.tint == FPPopoverWhiteTint)
{
    colors[0] = colors[1] = colors[2] = 1.0;
    colors[0] = colors[1] = colors[2] = 1.0;
    colors[3] = colors[7] = 1.0;
}

in newGradient: method of FPPopoverView