Fix HasPermission when checking against multiple flags

Created by: uwx

Summary

Fixes HasPermission only checking for the presence of one flag when multiple are checked against

Details

When checking against multiple flags, HasPermission currently only guarantees that one or more of the flags should be set for the check to pass. This changes the behavior to what it's expected to be: The result is only true if all the flags being checked against are present.

Changes proposed

• Fix AND comparison to equal what's being compared against, instead of 0 (any compared bit set)

Notes

Maybe add a HasAnyPermission method for the old behavior?