If you don't find any better solution, I'd suggest using a device ID
check rather than adding a quirk. Because such quirk cannot be generic.
In that case you have an off-by-one, but another device might have a
different problem.
That was in the case we'd encounter other devices where the descriptor
is bogus and has the same issue, but i agree this is unlikely.
More likely for Logitech USB webcams I'm afraid.
My dad's Logitech C500 showed the same issue several years back.
(I'll try to find some time to borrow the device and test your patch)
There's also a report that suggests a C200 may be affected as well.
(https://marc.info/?l=openbsd-misc&m=127952275021290&w=2)
