c-list: add c_list_init()

[thom311]

Add c_list_init() to initialize a CList instance.
For example:

c_list_init(&obj->list);

as a shorthand for the form

obj->list = (CList)C_LIST_INIT(&obj->list);

Is this left out intentionally to keep the API small? IMHO this short-hand would be nice, as the alternative is rather verbose.
Maybe return "void"? Dunno.

[dvdhrm]

I usually prefer the direct assignment, but we always provide initializer as well. Looks like an oversight here.

Anyway, I'd make it return void and not allow NULL. Hence, just:

static inline void c_list_init(CList *list) {
        *list = (CList)C_LIST_INIT(*list);
}

Or is there a use-case to return the pointer?

[thom311]

Anyway, I'd make it return void and not allow NULL. Hence, just:

Sure.

Or is there a use-case to return the pointer?

No strong use-case. Chaining of calls, which probably ends up in ugly code anyway.

[dvdhrm]

Looks good! Thanks!