cgeo/c-geo-opensource — comment on commit df4c8020c942189ea7854e11baef81a48a88d6ef
File:  line 0
By Bananeweizen:

Ok, according to mucek4's comment that field is not needed for stored caches. Otherwise we now had caches in the database _with_ encoded direction image and _without_ encoded direction image, so we would have had to differentiate those "old" and "new" caches when accessing the field.

But that's not an issue then.