Test bit is used like a boolean, so it must actually be a boolean.
Test bit is used like a boolean, so it must actually be a boolean.

This was causing swizzling on bit 17 swizzling intel IGDs when not
needed. Thanks to Brandon Mercer for testing.

orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars