Cosmetic: linuxlist.h: fix misleading comment

Whenever iterating over a list and removing entries,
llist_for_each_entry_safe must be used instead of llist_for_each_entry.

The comment with "non-consecutive(!)" entries sounds like this is not
needed as long as one is iterating over the list consecutively. I guess
that might have worked with prefetch logic, however the prefetch
function is just a stub in linuxlist.h. (Also prefetch has been removed
from list.h in linux.git e66eed651fd18a961f11cda62f3b5286c8cc4f9f.)

Change-Id: I217e6871afe121edba26e4c6fd1a461e397c9e72
diff --git a/include/osmocom/core/linuxlist.h b/include/osmocom/core/linuxlist.h
index 725c60c..2fc3fa7 100644
--- a/include/osmocom/core/linuxlist.h
+++ b/include/osmocom/core/linuxlist.h
@@ -328,8 +328,7 @@
 	     pos = llist_entry(pos->member.next, typeof(*pos), member),	\
 		     prefetch(pos->member.next))
 
-/*! Iterate over llist of given type, safe against removal of
- *  non-consecutive(!) llist entries.
+/*! Iterate over llist of given type, safe against removal of llist entry.
  *  \param pos    the 'type *' to use as a loop counter.
  *  \param n      another 'type *' to use as temporary storage.
  *  \param head   the head of the list over which to iterate.