[server PATCH 6/8] red_worker: make CCC_FOREACH safe

[Uri Lublin <uril@xxxxxxxxxx>]

Even though it is not used, it's better to make it safe (or remove it).
---
 server/red_worker.c |   12 +++++++-----
 1 files changed, 7 insertions(+), 5 deletions(-)

diff --git a/server/red_worker.c b/server/red_worker.c
index 72e5ea5..1f239c5 100644
--- a/server/red_worker.c
+++ b/server/red_worker.c
@@ -1157,12 +1157,14 @@ static inline uint64_t red_now(void);
         (next) = (link) ? ring_next(&drawable->glz_ring, (link)) : NULL,\
         glz = (link) ? SPICE_CONTAINEROF((link), RedGlzDrawable, drawable_link) : NULL)
 
-#define CCC_FOREACH(link, ccc, channel) \
+#define CCC_FOREACH_SAFE(link, next, ccc, channel)       \
     for (link = ring_get_head(&(channel)->clients),\
-         ccc = SPICE_CONTAINEROF(link, CommonChannelClient, base.channel_link);\
-            (link);                              \
-            (link) = ring_next(&(channel)->clients, link),\
-            ccc = SPICE_CONTAINEROF(link, CommonChannelClient, base.channel_link))
+           (next) = (link) ? ring_next(&(channel)->clients, (link)) : NULL, \
+           ccc = SPICE_CONTAINEROF(link, CommonChannelClient, base.channel_link);\
+         (link);                              \
+         (link) = (next), \
+           (next) = (link) ? ring_next(&(channel)->clients, (link)) : NULL, \
+           ccc = SPICE_CONTAINEROF(link, CommonChannelClient, base.channel_link))
 
 #define DCC_TO_WORKER(dcc) \
     (SPICE_CONTAINEROF((dcc)->common.base.channel, CommonChannel, base)->worker)
-- 
1.7.1

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