[empathy] account_widget_generic_format_param_name: make sure param_name is not NULL

[Guillaume Desmottes <gdesmott src gnome org>]

commit b8e7456de34fde39587b8a9429329b8867b10421
Author: Guillaume Desmottes <guillaume desmottes collabora co uk>
Date:   Mon Feb 6 15:39:46 2012 +0100

    account_widget_generic_format_param_name: make sure param_name is not NULL
    
    This should make the clang analyzer happier.

 libempathy-gtk/empathy-account-widget.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/libempathy-gtk/empathy-account-widget.c b/libempathy-gtk/empathy-account-widget.c
index 0de4dc8..375d624 100644
--- a/libempathy-gtk/empathy-account-widget.c
+++ b/libempathy-gtk/empathy-account-widget.c
@@ -694,6 +694,8 @@ account_widget_generic_format_param_name (const gchar *param_name)
   gchar *p;
   static GHashTable *translated_params = NULL;
 
+  g_return_val_if_fail (param_name != NULL, NULL);
+
   if (G_UNLIKELY (translated_params == NULL))
     translated_params = build_translated_params ();