It seems there is no FZ330 in last Lensfun DB.
in Lensfun DB, FZ300 is said to have same lens and sensor as FZ200
If you are sure, you could modify the file <RTinstalldir>/share/lensfun/compact-panasonic.xml
after
<camera>
<maker>Panasonic</maker>
<model>DMC-FZ300</model>
<!-- Uses same lens and sensor as FZ200 -->
<mount>panasonicDMCFZ200</mount>
<cropfactor>5.56</cropfactor>
</camera>
include following lines
<camera>
<maker>Panasonic</maker>
<model>DMC-FZ330</model>
<!-- Uses same lens and sensor as FZ200 -->
<mount>panasonicDMCFZ200</mount>
<cropfactor>5.56</cropfactor>
</camera>
Report if it works
Don’t forget to correct after reinstalling.
I don’t know where to file a lensfun bug report.