Apply patch #76254 from Roman I Khimov about lensfun interface which don't mangle cropFactor if it's set.
This behaviour was introduced by polish commit bebef401e147a00f859cb81774f8498a0623eee5.
With this branch present we always get cropFactor of
-1.0 in LensFunFilter::filterImage() and given that lensfun library just uses
crop factor of 1 which leads to obviously wrong calculations for cropped
cameras.






FIXED-IN: 3.0.0