[gnome-builder] preferences: add missing introspection annotation

[Sébastien Lafargue <slafargue src gnome org>]

commit fc42fbb79918b15e123ce37cc32e1285b4e377ef
Author: Sébastien Lafargue <slafargue gnome org>
Date:   Fri Dec 30 14:30:25 2016 +0100

    preferences: add missing introspection annotation

 libide/preferences/ide-preferences-entry.c |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)
---
diff --git a/libide/preferences/ide-preferences-entry.c b/libide/preferences/ide-preferences-entry.c
index 8a588a9..9faa868 100644
--- a/libide/preferences/ide-preferences-entry.c
+++ b/libide/preferences/ide-preferences-entry.c
@@ -215,6 +215,11 @@ ide_preferences_entry_get_title_widget (IdePreferencesEntry *self)
   return GTK_WIDGET (priv->title);
 }
 
+/**
+ * ide_preferences_entry_get_entry_widget:
+ *
+ * Returns: (transfer none): A #GtkWidget
+ */
 GtkWidget *
 ide_preferences_entry_get_entry_widget (IdePreferencesEntry *self)
 {