scripts: access-portal: Fix incorrect bitmask checking for media roles
In Lua, 0 is a truthy value, which means not 0 is false. Compare
the resulting value from bitwise AND with 0 instead of checking it with
if not to ensure correctness.
In Lua, 0 is a truthy value, which means not 0 is false. Compare
the resulting value from bitwise AND with 0 instead of checking it with
if not to ensure correctness.