[gtk-vnc] Fix a memory leak by freeing the private null cursor

[Jonh Wendell <jwendell src gnome org>]

commit a19afa45147b9e8d431ebc66668423b64b9fbf3f
Author: Jonh Wendell <jwendell gnome org>
Date:   Wed Oct 28 19:29:15 2009 -0300

    Fix a memory leak by freeing the private null cursor

 src/vncdisplay.c |    8 +++++++-
 1 files changed, 7 insertions(+), 1 deletions(-)
---
diff --git a/src/vncdisplay.c b/src/vncdisplay.c
index dc328ed..d20e695 100644
--- a/src/vncdisplay.c
+++ b/src/vncdisplay.c
@@ -986,7 +986,8 @@ static gboolean do_resize(void *opaque, int width, int height, gboolean quiet)
 	}
 
 	if (priv->gc == NULL) {
-		priv->null_cursor = create_null_cursor();
+		if (!priv->null_cursor)
+			priv->null_cursor = create_null_cursor();
 		if (priv->local_pointer)
 			do_pointer_show(obj);
 		else if (priv->in_pointer_grab || priv->absolute)
@@ -1621,6 +1622,11 @@ static void vnc_display_finalize (GObject *obj)
 		priv->image = NULL;
 	}
 
+	if (priv->null_cursor) {
+		gdk_cursor_unref (priv->null_cursor);
+		priv->null_cursor = NULL;
+	}
+
 	g_free (priv->host);
 	g_free (priv->port);