[Bluetooth] stopDiscovery API fix to be compliant with TCT tests

stopDiscovery API is supposed to cancel an active discovery session.
If user cancels the discovery while there is no active discovery,
we should NOT return an error to pass TCT tests.

diff --git a/bluetooth/bluetooth_instance_capi.cc b/bluetooth/bluetooth_instance_capi.cc
index bb0b820..4c5086a 100644 (file)
--- a/bluetooth/bluetooth_instance_capi.cc
+++ b/bluetooth/bluetooth_instance_capi.cc
@@ -571,7 +571,7 @@ void BluetoothInstance::HandleStopDiscovery(const picojson::value& msg) {
   CAPI(bt_adapter_is_discovering(&is_discovering));
   if (!is_discovering) {
     picojson::value::object o;
-    o["error"] = picojson::value(static_cast<double>(1));
+    o["error"] = picojson::value(static_cast<double>(0));
     o["cmd"] = picojson::value("");
     o["reply_id"] = picojson::value(callbacks_id_map_["StopDiscovery"]);
     callbacks_id_map_.erase("StopDiscovery");