SYS_SLIST_ITERATE_FROM_NODE macro

Provide the primitive to iterate on a list, from a node in the list Note: the loop is unsafe and thus __sn should not be removed User _MUST_ add the loop statement curly braces enclosing its own code: SYS_SLIST_ITERATE_FROM_NODE(l, n) { } Like SYS_SLIST_FOR_EACH_NODE(), but __dn already contains a node in the list where to start searching for the next entry from. If NULL, it starts from the head. This and other SYS_SLIST_*() macros are not thread safe.