Linux: Extensions - removes abc.Iterable definition

[dgmcdona]

hlist_head is missing an implementation for collections.abc.Iterable, resulting in a crash at runtime. This fixes the issue by providing the required __iter__ implementation for hlist_head.

[gcmoreira]

Hey @dgmcdona it was just removed :) ... good catch anyway but the proposed fix is not correct. It's actually the other way around, we have to remove collections.abc.Iterable from the class declaration, I forgot to do this, my bad.
self.vol.member_name cannot be used as the member name to iterate this type and that's why a __iter__ doesn't make sense here.

[gcmoreira]

By the way, __iter__ doesn’t make sense for list_head either, so it also needs to be removed from that object as well. I'll handle that in a separate PR soon, but it will need more extensive testing since many plugins rely on that object.

[dgmcdona]

Sounds good, thanks @gcmoreira ! I'll close this one, then.

[gcmoreira]

Oh we can fix this and take advantage of your finding here if you want. You should remove the hlist_head __iter__ method and collections.abc.Iterable from the class declaration and it will work again. Sorry for the misunderstanding, I didn't mean you should close it.

[gcmoreira]

Great! thanks @dgmcdona, it looks good.

@ikelos this is ready for your review. @dgmcdona caught this bug right away 🥇 . I messed it up in the last commit.

[ikelos]

Happy if you guys are...