add one variable initilzation

Signed-off-by: hwware <[email protected]>

src/cluster_legacy.c

@@ -1134,6 +1134,7 @@ void clusterInit(void) {
     server.cluster->failover_auth_epoch = 0;
     server.cluster->cant_failover_reason = CLUSTER_CANT_FAILOVER_NONE;
     server.cluster->lastVoteEpoch = 0;
+    server.cluster->failover_auth_sent = 0;
 
     /* Initialize stats */
     for (int i = 0; i < CLUSTERMSG_TYPE_COUNT; i++) {