kc3-lang/libevent

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Author : chenguolong
Date : 2020-02-04 16:05:02
Hash : 968bbd5c
Message : event_base_once: fix potential null pointer threat supposing if base is null, EVBASE_ACQUIRE_LOCK and EVBASE_RELEASE_LOCK would get a coredump, so we add a guard for protection. Signed-off-by: chenguolong <cgl.chenguolong@huawei.com>