Patch: Call js_finalise after gui_quit()

[Ole]

Hello,

this patch changes the shutdown order. js_finalise() must be called 
after gui_quit, otherwise, gui_quit() will try to free javascript 
context belonging to a javascript runtime which is already shutdown. 
(gui_quit closes / destroys all open windows, which means it also frees 
the js contexts at that point).

Another approach would be to collect all available js context before 
calling JS_DestroyRuntime().

Greets,
OleIndex: desktop/netsurf.c
===================================================================
--- desktop/netsurf.c   (Revision 13994)
+++ desktop/netsurf.c   (Arbeitskopie)
@@ -253,13 +253,14 @@
 
 void netsurf_exit(void)
 {
-       js_finalise();
-
        hlcache_stop();
        
        LOG(("Closing GUI"));
        gui_quit();
 
+       LOG(("Finalising JavaScript runtime"));
+       js_finalise();
+
        LOG(("Closing search and related resources"));
        search_web_cleanup();