From: Tomas Valla <tom@ucw.cz>
Date: Wed, 5 Sep 2012 09:15:15 +0000 (+0200)
Subject: slists: The behaviour of slist_remove_head now mimics clist_remove_head
X-Git-Tag: v5.99~112
X-Git-Url: http://mj.ucw.cz/gitweb/?a=commitdiff_plain;h=b2d3dc2b5c19c8b196c35793228ba28dbfff5eff;p=libucw.git

slists: The behaviour of slist_remove_head now mimics clist_remove_head
---

diff --git a/ucw/slists.h b/ucw/slists.h
index 5c6d29f9..30089ac7 100644
--- a/ucw/slists.h
+++ b/ucw/slists.h
@@ -116,9 +116,12 @@ static inline void slist_remove_after(slist *l, snode *after)
 /**
  * Remove the first node in @l. The list can be empty.
  **/
-static inline void slist_remove_head(slist *l)
+static inline void *slist_remove_head(slist *l)
 {
-  slist_remove_after(l, &l->head);
+  snode *n = slist_head(l);
+  if (n)
+    slist_remove_after(l, &l->head);
+  return n;
 }
 
 /* Loops */