[gnome-shell] extensions-tool/prefs: Log D-Bus errors

[Marge Bot <marge-bot src gnome org>]

commit 09ed1c533c2350b81e2c79f84998e8d3b4c1199a
Author: Florian Müllner <fmuellner gnome org>
Date:   Thu Oct 28 19:55:23 2021 +0200

    extensions-tool/prefs: Log D-Bus errors
    
    We currently ignore any error that may occur when calling the
    OpenExtensionPrefs D-Bus method. Right now such an error is highly
    unlikely, given that we already checked that we are running under
    gnome-shell and the extension in question exists and has prefs.
    
    We'll soon make sure that only one dialog is shown at any time,
    which is an error that we can realistically expect, so handle that
    properly.
    
    https://gitlab.gnome.org/GNOME/gnome-shell/-/issues/4564
    
    Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/2013>

 subprojects/extensions-tool/src/command-prefs.c | 8 ++++++++
 1 file changed, 8 insertions(+)
---
diff --git a/subprojects/extensions-tool/src/command-prefs.c b/subprojects/extensions-tool/src/command-prefs.c
index 50e4b80ba2..01c385e062 100644
--- a/subprojects/extensions-tool/src/command-prefs.c
+++ b/subprojects/extensions-tool/src/command-prefs.c
@@ -56,6 +56,14 @@ launch_extension_prefs (const char *uuid)
                           NULL,
                           &error);
 
+  if (error)
+    {
+      g_dbus_error_strip_remote_error (error);
+      g_printerr (_("Failed to open prefs for extension “%s”: %s\n"),
+                  uuid, error->message);
+      return FALSE;
+    }
+
   return TRUE;
 }