two more typos

src/or/rendmid.c

@@ -188,7 +188,7 @@ rend_mid_introduce(or_circuit_t *circ, const uint8_t *request,
              "Unable to send INTRODUCE2 cell to Tor client.");
     goto err;
   }
-  /* And sent an ack down Alice's circuit.  Empty body means succeeded. */
+  /* And send an ack down Alice's circuit.  Empty body means succeeded. */
   if (relay_send_command_from_edge(0,TO_CIRCUIT(circ),
                                    RELAY_COMMAND_INTRODUCE_ACK,
                                    NULL,0,NULL)) {
@@ -199,7 +199,7 @@ rend_mid_introduce(or_circuit_t *circ, const uint8_t *request,
 
   return 0;
  err:
-  /* Send the client an NACK */
+  /* Send the client a NACK */
   nak_body[0] = 1;
   if (relay_send_command_from_edge(0,TO_CIRCUIT(circ),
                                    RELAY_COMMAND_INTRODUCE_ACK,