fix wrong use of the dht_node_state:state() type (found by dialyzer)
fix wrong use of the dht_node_state:state() type (found by dialyzer)

scalaris-team/scalaris,scalaris-team/scalaris,scalaris-team/scalaris,scalaris-team/scalaris,scalaris-team/scalaris,scalaris-team/scalaris,scalaris-team/scalaris,scalaris-team/scalaris