[gnome-bluetooth] lib: Don't enable/disable discovery again if already enabled

[Bastien Nocera <hadess src gnome org>]

commit 65becb0c2a019a683af3f3a2fefa9391e2cfdcef
Author: Jonas Dreßler <verdre v0yd nl>
Date:   Fri Feb 18 11:14:58 2022 +0100

    lib: Don't enable/disable discovery again if already enabled
    
    We have a private property to keep track of this already, let's use it
    and bail out of _bluetooth_client_set_default_adapter_discovering() if
    we're already discovering.

 lib/bluetooth-client.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)
---
diff --git a/lib/bluetooth-client.c b/lib/bluetooth-client.c
index 54ecc40d..4705cdb5 100644
--- a/lib/bluetooth-client.c
+++ b/lib/bluetooth-client.c
@@ -1084,6 +1084,9 @@ _bluetooth_client_set_default_adapter_discovering (BluetoothClient *client,
        g_autoptr(GDBusProxy) adapter = NULL;
        GVariantBuilder builder;
 
+       if (client->discovery_started == discovering)
+               return;
+
        adapter = _bluetooth_client_get_default_adapter (client);
        if (adapter == NULL) {
                g_debug ("%s discovery requested, but no default adapter",
@@ -1091,6 +1094,8 @@ _bluetooth_client_set_default_adapter_discovering (BluetoothClient *client,
                return;
        }
 
+       client->discovery_started = discovering;
+
        if (discovering) {
                g_variant_builder_init (&builder, G_VARIANT_TYPE_VARDICT);
                g_variant_builder_add (&builder, "{sv}",
@@ -1102,7 +1107,6 @@ _bluetooth_client_set_default_adapter_discovering (BluetoothClient *client,
                                                    client);
        }
 
-       client->discovery_started = discovering;
        if (discovering) {
                g_debug ("Starting discovery on %s", g_dbus_proxy_get_object_path (adapter));
                adapter1_call_start_discovery (ADAPTER1 (adapter),