…x){',so the modified index can increase;2,fix the bug in cetcd.c:509 in the function of cetcd_multi_watch_async,the variable 'pthread_t thread' should be imported as a parameter like 'pthread_t * thread' which is mallocd by the user,so it can be use when function cetcd_multi_watch_async ended.Nor it will core.

…d.c:397行的 watcher->index 修改为 index，是为了修复当连续两个set事件产生的时候，而用户回调函数处理时间很长，cetcd.c只能捕获到第一个set事件，而无法捕获到第二个事件，这样会导致事件丢失