[gtk+] frame: annotate the @label params with (allow-none)

[Stefan Kost <stefkost src gnome org>]

commit d4679c0a13cc74cd1f401422c8f153b3a98070fe
Author: Stefan Sauer <ensonic users sf net>
Date:   Thu Aug 29 09:06:31 2013 +0200

    frame: annotate the @label params with (allow-none)

 gtk/gtkaspectframe.c |    2 +-
 gtk/gtkframe.c       |    2 +-
 gtk/gtklabel.c       |    4 ++--
 3 files changed, 4 insertions(+), 4 deletions(-)
---
diff --git a/gtk/gtkaspectframe.c b/gtk/gtkaspectframe.c
index e9e7636..f684733 100644
--- a/gtk/gtkaspectframe.c
+++ b/gtk/gtkaspectframe.c
@@ -219,7 +219,7 @@ gtk_aspect_frame_get_property (GObject         *object,
 
 /**
  * gtk_aspect_frame_new:
- * @label: Label text.
+ * @label: (allow-none): Label text.
  * @xalign: Horizontal alignment of the child within the allocation of
  *  the #GtkAspectFrame. This ranges from 0.0 (left aligned)
  *  to 1.0 (right aligned)
diff --git a/gtk/gtkframe.c b/gtk/gtkframe.c
index e5c1aad..dbb93b3 100644
--- a/gtk/gtkframe.c
+++ b/gtk/gtkframe.c
@@ -332,7 +332,7 @@ gtk_frame_get_property (GObject         *object,
 
 /**
  * gtk_frame_new:
- * @label: the text to use as the label of the frame
+ * @label: (allow-none): the text to use as the label of the frame
  * 
  * Creates a new #GtkFrame, with optional label @label.
  * If @label is %NULL, the label is omitted.
diff --git a/gtk/gtklabel.c b/gtk/gtklabel.c
index d5deb57..d0b1643 100644
--- a/gtk/gtklabel.c
+++ b/gtk/gtklabel.c
@@ -1617,7 +1617,7 @@ gtk_label_buildable_custom_finished (GtkBuildable *buildable,
 
 /**
  * gtk_label_new:
- * @str: The text of the label
+ * @str: (allow-none): The text of the label
  *
  * Creates a new label with the given text inside it. You can
  * pass %NULL to get an empty label widget.
@@ -1639,7 +1639,7 @@ gtk_label_new (const gchar *str)
 
 /**
  * gtk_label_new_with_mnemonic:
- * @str: The text of the label, with an underscore in front of the
+ * @str: (allow-none): The text of the label, with an underscore in front of the
  *       mnemonic character
  *
  * Creates a new #GtkLabel, containing the text in @str.