[gtksourceview] UndoManager: simplify interface's default_init()

[Sébastien Wilmet <swilmet src gnome org>]

commit 8e69d5c63a88d19b4e4585f58e50ba1a5f3ffd21
Author: Sébastien Wilmet <swilmet gnome org>
Date:   Thu Aug 21 17:54:55 2014 +0200

    UndoManager: simplify interface's default_init()
    
    The GObject doc says that default_init() is called only once:
    "This function is called only once for the interface no matter how many
    implementations there are."

 gtksourceview/gtksourceundomanager.c |   51 ++++++++++++++-------------------
 1 files changed, 22 insertions(+), 29 deletions(-)
---
diff --git a/gtksourceview/gtksourceundomanager.c b/gtksourceview/gtksourceundomanager.c
index 159932a..4a9d965 100644
--- a/gtksourceview/gtksourceundomanager.c
+++ b/gtksourceview/gtksourceundomanager.c
@@ -99,8 +99,6 @@ gtk_source_undo_manager_end_not_undoable_action_default (GtkSourceUndoManager *m
 static void
 gtk_source_undo_manager_default_init (GtkSourceUndoManagerIface *iface)
 {
-       static gboolean initialized = FALSE;
-
        iface->can_undo = gtk_source_undo_manager_can_undo_default;
        iface->can_redo = gtk_source_undo_manager_can_redo_default;
 
@@ -110,19 +108,17 @@ gtk_source_undo_manager_default_init (GtkSourceUndoManagerIface *iface)
        iface->begin_not_undoable_action = gtk_source_undo_manager_begin_not_undoable_action_default;
        iface->end_not_undoable_action = gtk_source_undo_manager_end_not_undoable_action_default;
 
-       if (!initialized)
-       {
-               /**
-                * GtkSourceUndoManager::can-undo-changed:
-                * @manager: The #GtkSourceUndoManager
-                *
-                * Emitted when the ability to undo has changed.
-                *
-                * Since: 2.10
-                *
-                */
-               signals[CAN_UNDO_CHANGED] =
-                       g_signal_new ("can-undo-changed",
+       /**
+        * GtkSourceUndoManager::can-undo-changed:
+        * @manager: The #GtkSourceUndoManager
+        *
+        * Emitted when the ability to undo has changed.
+        *
+        * Since: 2.10
+        *
+        */
+       signals[CAN_UNDO_CHANGED] =
+               g_signal_new ("can-undo-changed",
                              G_TYPE_FROM_INTERFACE (iface),
                              G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
                              G_STRUCT_OFFSET (GtkSourceUndoManagerIface, can_undo_changed),
@@ -130,26 +126,23 @@ gtk_source_undo_manager_default_init (GtkSourceUndoManagerIface *iface)
                              G_TYPE_NONE,
                              0);
 
-               /**
-                * GtkSourceUndoManager::can-redo-changed:
-                * @manager: The #GtkSourceUndoManager
-                *
-                * Emitted when the ability to redo has changed.
-                *
-                * Since: 2.10
-                *
-                */
-               signals[CAN_REDO_CHANGED] =
-                       g_signal_new ("can-redo-changed",
+       /**
+        * GtkSourceUndoManager::can-redo-changed:
+        * @manager: The #GtkSourceUndoManager
+        *
+        * Emitted when the ability to redo has changed.
+        *
+        * Since: 2.10
+        *
+        */
+       signals[CAN_REDO_CHANGED] =
+               g_signal_new ("can-redo-changed",
                              G_TYPE_FROM_INTERFACE (iface),
                              G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
                              G_STRUCT_OFFSET (GtkSourceUndoManagerIface, can_redo_changed),
                              NULL, NULL, NULL,
                              G_TYPE_NONE,
                              0);
-
-               initialized = TRUE;
-       }
 }
 
 /**