Merge pull request #471 from sjanc/host_rand_adv_fix

nimble: Fix setting advertising instance random address
diff --git a/net/nimble/host/src/ble_hs_hci_util.c b/net/nimble/host/src/ble_hs_hci_util.c
index 4f1d4b9..3401dde 100644
--- a/net/nimble/host/src/ble_hs_hci_util.c
+++ b/net/nimble/host/src/ble_hs_hci_util.c
@@ -156,6 +156,11 @@
     if (rc != 0) {
         return rc;
     }
+
+    rc = ble_hs_hci_cmd_tx_empty_ack(buf);
+    if (rc != 0) {
+        return rc;
+    }
 #endif
 
     return 0;