[empathy] Use default variant if we can't find any variants

[Guillaume Desmottes <gdesmott src gnome org>]

commit e487926900bb21e5f0af642429d37ec8d90f4c3d
Author: Guillaume Desmottes <guillaume desmottes collabora co uk>
Date:   Tue Oct 11 16:46:23 2011 -0400

    Use default variant if we can't find any variants
    
    We use to crash here trying to get the first element of an empty GPtrArray.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=660586

 libempathy-gtk/empathy-theme-adium.c |    5 ++++-
 1 files changed, 4 insertions(+), 1 deletions(-)
---
diff --git a/libempathy-gtk/empathy-theme-adium.c b/libempathy-gtk/empathy-theme-adium.c
index 8877a27..c5d9d20 100644
--- a/libempathy-gtk/empathy-theme-adium.c
+++ b/libempathy-gtk/empathy-theme-adium.c
@@ -1753,8 +1753,11 @@ adium_info_dup_path_for_variant (GHashTable *info,
 		return g_strdup ("main.css");
 	}
 
-	/* Verify the variant exists, fallback to the first one */
 	variants = empathy_adium_info_get_available_variants (info);
+	if (variants->len == 0)
+		return g_strdup ("main.css");
+
+	/* Verify the variant exists, fallback to the first one */
 	for (i = 0; i < variants->len; i++) {
 		if (!tp_strdiff (variant, g_ptr_array_index (variants, i))) {
 			break;