[gtkhtml] Warn on console when finalizing HTMLEngine with opened streams

[Milan Crha <mcrha src gnome org>]

commit e85fb84f9d0b2b0586e3e37ca487d9dc77fc0119
Author: Milan Crha <mcrha redhat com>
Date:   Fri Feb 5 15:16:21 2010 +0100

    Warn on console when finalizing HTMLEngine with opened streams

 gtkhtml/htmlengine.c |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)
---
diff --git a/gtkhtml/htmlengine.c b/gtkhtml/htmlengine.c
index 0a35a2f..1f1aa5f 100644
--- a/gtkhtml/htmlengine.c
+++ b/gtkhtml/htmlengine.c
@@ -4024,9 +4024,12 @@ html_engine_finalize (GObject *object)
 {
 	HTMLEngine *engine;
 	GList *p;
+	gint opened_streams;
 
 	engine = HTML_ENGINE (object);
 
+	opened_streams = engine->opened_streams;
+
         /* it is critical to destroy timers immediately so that
 	 * if widgets contained in the object tree manage to iterate the
 	 * mainloop we don't reenter in an inconsistant state.
@@ -4211,6 +4214,9 @@ html_engine_finalize (GObject *object)
 	}
 
 	G_OBJECT_CLASS (parent_class)->finalize (object);
+
+	/* just note when will be engine finalized before all the streams are closed */
+	g_return_if_fail (opened_streams == 0);
 }
 
 static void