[glib] resource file: add cancel to dummy monitor

[Cosimo Cecchi <cosimoc src gnome org>]

commit c1e2a8d72766323181c804b47547242bd70460e9
Author: Matt Watson <mattdangerw gmail com>
Date:   Fri Jan 8 16:06:53 2016 -0800

    resource file: add cancel to dummy monitor
    
    gfilemonitor has a cancel vfunc and will call into the in dispose.
    If we don't stub it out we get a segfault.

 gio/gresourcefile.c |    7 +++++++
 1 files changed, 7 insertions(+), 0 deletions(-)
---
diff --git a/gio/gresourcefile.c b/gio/gresourcefile.c
index f4af711..6f211f4 100644
--- a/gio/gresourcefile.c
+++ b/gio/gresourcefile.c
@@ -595,6 +595,12 @@ GType g_resource_file_monitor_get_type (void);
 
 G_DEFINE_TYPE (GResourceFileMonitor, g_resource_file_monitor, G_TYPE_FILE_MONITOR)
 
+static gboolean
+g_resource_file_monitor_cancel (GFileMonitor *monitor)
+{
+  return TRUE;
+}
+
 static void
 g_resource_file_monitor_init (GResourceFileMonitor *monitor)
 {
@@ -603,6 +609,7 @@ g_resource_file_monitor_init (GResourceFileMonitor *monitor)
 static void
 g_resource_file_monitor_class_init (GResourceFileMonitorClass *class)
 {
+  class->cancel = g_resource_file_monitor_cancel;
 }
 
 static GFileMonitor *