server/etcdserver: fix oss-fuzz issue 42181
server/etcdserver: fix oss-fuzz issue 42181

mqliang/etcd,ajityagaty/etcd,etcd-io/etcd,mkumatag/etcd,ajityagaty/etcd,etcd-io/etcd,mqliang/etcd,mkumatag/etcd,mqliang/etcd,rnaveiras/etcd,rnaveiras/etcd,ajityagaty/etcd,rnaveiras/etcd,mkumatag/etcd,etcd-io/etcd