[epiphany] web-extension-proxy: Don't print error if cancelled

[Michael Catanzaro <mcatanzaro src gnome org>]

commit c918913bae6c1d6ae306217fd0bc5726069220b6
Author: Michael Catanzaro <mcatanzaro gnome org>
Date:   Tue Nov 1 19:23:05 2016 -0500

    web-extension-proxy: Don't print error if cancelled

 embed/ephy-web-extension-proxy.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)
---
diff --git a/embed/ephy-web-extension-proxy.c b/embed/ephy-web-extension-proxy.c
index 13481e8..519db85 100644
--- a/embed/ephy-web-extension-proxy.c
+++ b/embed/ephy-web-extension-proxy.c
@@ -117,7 +117,8 @@ web_extension_proxy_created_cb (GDBusProxy            *proxy,
 
   web_extension->proxy = g_dbus_proxy_new_finish (result, &error);
   if (!web_extension->proxy) {
-    g_warning ("Error creating web extension proxy: %s", error->message);
+    if (!g_error_matches (error, G_IO_ERROR, G_IO_ERROR_CANCELLED))
+      g_warning ("Error creating web extension proxy: %s", error->message);
     g_error_free (error);
 
     /* Attempt to trigger connection_closed_cb, which will destroy us, and ensure that