Question A suggestion in gd_dockingbase.pas

Good evening,
I wrote an application using the capabilities of the TGlassDockMaster class. It works well except for an error that is raised from line 2306
OrigBitmap := CreateBitmapFromLazarusResource('glassdock_close_icon')

I don't have this resource. To avoid this exception I've rebuilded the IDE with a simple tip:
if LazarusResources.Find('glassdock_close_icon') <> nil then
OrigBitmap := CreateBitmapFromLazarusResource('glassdock_close_icon')
else
OrigBitmap := nil;

I think this little change could be inserted in your package.

Thank you for the wonderful work you are doing.