[gnome-session] session-save: Tidy up some GError handling

[Ray Strode <halfline src gnome org>]

commit 76db6cd608e5f8448a5161208e4be71d0f84eb77
Author: Philip Withnall <pwithnall endlessos org>
Date:   Fri Nov 12 16:54:47 2021 +0000

    session-save: Tidy up some GError handling
    
    This introduces no functional changes, but makes the code a little
    clearer by making the ownership transfer explicit.
    
    Signed-off-by: Philip Withnall <pwithnall endlessos org>

 gnome-session/gsm-session-save.c | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)
---
diff --git a/gnome-session/gsm-session-save.c b/gnome-session/gsm-session-save.c
index a71a6181..e7f3653a 100644
--- a/gnome-session/gsm-session-save.c
+++ b/gnome-session/gsm-session-save.c
@@ -68,12 +68,10 @@ save_one_client (char            *id,
         char       *contents = NULL;
         gsize       length = 0;
         char       *discard_exec;
-        GError     *local_error;
+        g_autoptr(GError) local_error = NULL;
 
         client = GSM_CLIENT (object);
 
-        local_error = NULL;
-
         app_id = gsm_client_peek_app_id (client);
         if (!IS_STRING_EMPTY (app_id)) {
                 if (g_str_has_suffix (app_id, ".desktop"))
@@ -141,8 +139,7 @@ out:
 
         /* in case of any error, stop saving session */
         if (local_error) {
-                g_propagate_error (data->error, local_error);
-                g_error_free (local_error);
+                g_propagate_error (data->error, g_steal_pointer (&local_error));
 
                 return TRUE;
         }