OnMouseWheelUp in FNCChat

[zafehouze (support@zafehouze.com)]

Shoot..

I see my error now..

I had opened the FMX.TMSFNCCustomTreeView and not VCL.TMSFNCCustomTreeView, no bloody wonder it doesn't show it being compiled when debug is enabled..

...and with Handled commented out, the OnMoseWheel works again..