[epiphany] Add sanity check warning for finding extensions

[Gustavo Noronha Silva <gns src gnome org>]

commit 6892dd5bb45df1b0339797c68bc5a1079076c53f
Author: Gustavo Noronha Silva <gns gnome org>
Date:   Wed Jul 9 15:03:48 2014 -0300

    Add sanity check warning for finding extensions
    
    That will help debugging future issues with extensions not being found.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=727139

 embed/ephy-embed-shell.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/embed/ephy-embed-shell.c b/embed/ephy-embed-shell.c
index 1122eaf..ddaae74 100644
--- a/embed/ephy-embed-shell.c
+++ b/embed/ephy-embed-shell.c
@@ -123,6 +123,9 @@ ephy_embed_shell_find_web_extension (EphyEmbedShell *shell,
 
   l = g_list_find_custom (shell->priv->web_extensions, name_owner, (GCompareFunc)web_extension_compare);
 
+  if (!l)
+    g_warning ("Could not find extension with name owner `%s´.", name_owner);
+
   return l ? EPHY_WEB_EXTENSION_PROXY (l->data) : NULL;
 }