A line in apkinfo get_superclass_relationship does not have any effect

[dolamroth]

This line does not seem to have any effect

quark-engine/quark/core/apkinfo.py

Line 455 in cf35a66

hierarchy_dict[str(_class.name)].union(

set.union returns a new set, but does not modify original set in-place.

If it should be modified (like in method get_subclass_relationship), either elements should be add'ed, or union should be changed to update