ipvs: Remove unused variable ret from sync_thread_master()
net/netfilter/ipvs/ip_vs_sync.c: In function 'sync_thread_master': net/netfilter/ipvs/ip_vs_sync.c:1640:8: warning: unused variable 'ret' [-Wunused-variable] Commit 35a2af94 ("sched/wait: Make the __wait_event*() interface more friendly") changed how the interruption state is returned. However, sync_thread_master() ignores this state, now causing a compile warning. According to Julian Anastasov <ja@ssi.bg>, this behavior is OK: "Yes, your patch looks ok to me. In the past we used ssleep() but IPVS users were confused why IPVS threads increase the load average. So, we switched to _interruptible calls and later the socket polling was added." Document this, as requested by Peter Zijlstra, to avoid precious developers disappearing in this pitfall in the future. Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: Julian Anastasov <ja@ssi.bg> Signed-off-by: Simon Horman <horms@verge.net.au>
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