[glib/new-gsettings] Do not send a changed signal when a non-existing key is reset

[Vincent Untz <vuntz src gnome org>]

commit 8f23a01b5d8da15cac4f63f61c2ed1c58ff597f7
Author: Vincent Untz <vuntz gnome org>
Date:   Thu Apr 15 14:32:57 2010 -0400

    Do not send a changed signal when a non-existing key is reset

 gio/gmemorysettingsbackend.c |    8 ++++++--
 1 files changed, 6 insertions(+), 2 deletions(-)
---
diff --git a/gio/gmemorysettingsbackend.c b/gio/gmemorysettingsbackend.c
index 15dfb73..01fae9a 100644
--- a/gio/gmemorysettingsbackend.c
+++ b/gio/gmemorysettingsbackend.c
@@ -178,11 +178,14 @@ g_memory_settings_backend_reset_key (GMemorySettingsBackend *memory,
                                      const gchar            *key,
                                      gpointer                origin_tag)
 {
+  gboolean     had_key;
   const gchar *slash;
   const gchar *base_key;
   gchar       *path;
 
-  g_hash_table_remove (memory->priv->table, key);
+  had_key = g_hash_table_lookup_extended (memory->priv->table, key, NULL, NULL);
+  if (had_key)
+    g_hash_table_remove (memory->priv->table, key);
 
   slash = strrchr (key, '/');
   g_assert (slash != NULL);
@@ -194,7 +197,8 @@ g_memory_settings_backend_reset_key (GMemorySettingsBackend *memory,
 
   g_free (path);
 
-  g_settings_backend_changed (G_SETTINGS_BACKEND (memory), key, origin_tag);
+  if (had_key)
+    g_settings_backend_changed (G_SETTINGS_BACKEND (memory), key, origin_tag);
 }
 
 static void