[libgda] Improved gda_connection_event_set_description()'s documentation

[Vivien Malerba <vivien src gnome org>]

commit ba6e86efaa826e74e303a841f9c84fad0bde7dc3
Author: Vivien Malerba <malerba gnome-db org>
Date:   Thu Aug 16 22:12:49 2012 +0200

    Improved gda_connection_event_set_description()'s documentation

 libgda/gda-connection-event.c |    7 +++++--
 1 files changed, 5 insertions(+), 2 deletions(-)
---
diff --git a/libgda/gda-connection-event.c b/libgda/gda-connection-event.c
index 68c0a0c..76a7bcf 100644
--- a/libgda/gda-connection-event.c
+++ b/libgda/gda-connection-event.c
@@ -225,7 +225,7 @@ gda_connection_event_get_description (GdaConnectionEvent *event)
 /**
  * gda_connection_event_set_description:
  * @event: a #GdaConnectionEvent.
- * @description: a description.
+ * @description: (allow-none): a description, or %NULL (to unset current description if any)
  *
  * Sets @event's @description. This function should not be called directly.
  */
@@ -236,7 +236,10 @@ gda_connection_event_set_description (GdaConnectionEvent *event, const gchar *de
 
 	if (event->priv->description)
 		g_free (event->priv->description);
-	event->priv->description = g_strdup (description);
+	if (description)
+		event->priv->description = g_strdup (description);
+	else
+		event->priv->description = NULL;
 }
 
 /**