[lasem] Fixed critical in lsm_dom_view_finalize. [#622856]

[Jean Bréfort <jbrefort src gnome org>]

commit 3124be20017c97f1c4386eb6137cf68ea80c271e
Author: Jean Brefort <jean brefort normalesup org>
Date:   Sun Jun 27 11:15:23 2010 +0200

    Fixed critical in lsm_dom_view_finalize. [#622856]

 src/lsmdomview.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)
---
diff --git a/src/lsmdomview.c b/src/lsmdomview.c
index ca1f4cf..f2b20b2 100644
--- a/src/lsmdomview.c
+++ b/src/lsmdomview.c
@@ -217,7 +217,8 @@ lsm_dom_view_finalize (GObject *object)
 {
 	LsmDomView *view = LSM_DOM_VIEW (object);
 
-	g_object_unref (view->document);
+	if (view->document)
+		g_object_unref (view->document);
 
 	if (view->pango_layout != NULL)
 		g_object_unref (view->pango_layout);