[gnome-control-center] info: Avoid a crash when we're cancelled

[Rui Matos <rtcm src gnome org>]

commit 5622704b74bb73f4fa5cf33825d85a5a6670533f
Author: Rui Matos <tiagomatos gmail com>
Date:   Sun Aug 27 20:15:47 2017 +0200

    info: Avoid a crash when we're cancelled
    
    If we're cancelled, the panel is being finalized so return immediately
    instead of iterating further and crashing.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=786097

 panels/info/cc-info-overview-panel.c |   21 +++++++++++++++------
 1 files changed, 15 insertions(+), 6 deletions(-)
---
diff --git a/panels/info/cc-info-overview-panel.c b/panels/info/cc-info-overview-panel.c
index 163d006..3af58be 100644
--- a/panels/info/cc-info-overview-panel.c
+++ b/panels/info/cc-info-overview-panel.c
@@ -501,23 +501,32 @@ query_done (GFile               *file,
             GAsyncResult        *res,
             CcInfoOverviewPanel *self)
 {
+  CcInfoOverviewPanelPrivate *priv;
   GFileInfo *info;
   GError *error = NULL;
-  CcInfoOverviewPanelPrivate *priv = cc_info_overview_panel_get_instance_private (self);
 
   info = g_file_query_filesystem_info_finish (file, res, &error);
   if (info != NULL)
     {
+      priv = cc_info_overview_panel_get_instance_private (self);
       priv->total_bytes += g_file_info_get_attribute_uint64 (info, G_FILE_ATTRIBUTE_FILESYSTEM_SIZE);
       g_object_unref (info);
     }
   else
     {
-      char *path;
-      path = g_file_get_path (file);
-      g_warning ("Failed to get filesystem free space for '%s': %s", path, error->message);
-      g_free (path);
-      g_error_free (error);
+      if (g_error_matches (error, G_IO_ERROR, G_IO_ERROR_CANCELLED))
+        {
+          g_error_free (error);
+          return;
+        }
+      else
+        {
+          char *path;
+          path = g_file_get_path (file);
+          g_warning ("Failed to get filesystem free space for '%s': %s", path, error->message);
+          g_free (path);
+          g_error_free (error);
+        }
     }
 
   /* And onto the next element */