[gimp] libgimpwidgets: fix missing doc comments and annotations.

[Jehan <jehanp src gnome org>]

commit f9f516a99a04579e226b36b3896e2c9c5722b2c7
Author: Jehan <jehan girinstud io>
Date:   Fri Nov 20 11:36:11 2020 +0100

    libgimpwidgets: fix missing doc comments and annotations.

 libgimpwidgets/gimplabelintwidget.c | 6 ++++++
 1 file changed, 6 insertions(+)
---
diff --git a/libgimpwidgets/gimplabelintwidget.c b/libgimpwidgets/gimplabelintwidget.c
index 157e70eba4..a9b4835024 100644
--- a/libgimpwidgets/gimplabelintwidget.c
+++ b/libgimpwidgets/gimplabelintwidget.c
@@ -254,6 +254,12 @@ gimp_label_int_widget_new (const gchar *text,
   return int_widget;
 }
 
+/**
+ * gimp_label_int_widget_get_widget:
+ * @widget: the #GimpLabelIntWidget.
+ *
+ * Returns: (transfer none): The new #GtkWidget packed next to the label.
+ **/
 GtkWidget *
 gimp_label_int_widget_get_widget (GimpLabelIntWidget *widget)
 {