[vinagre] fix a crash with empty history file

[Jonh Wendell <jwendell src gnome org>]

commit dcd085c19dd9101a6aad0ef6cd48f0259fb0f026
Author: Matthias Clasen <mclasen redhat com>
Date:   Wed Jan 27 09:36:16 2010 -0300

    fix a crash with empty history file

 vinagre/vinagre-connect.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/vinagre/vinagre-connect.c b/vinagre/vinagre-connect.c
index e6115f2..a5599bd 100644
--- a/vinagre/vinagre-connect.c
+++ b/vinagre/vinagre-connect.c
@@ -203,7 +203,7 @@ saved_history (void)
     {
       history_from_file = g_strsplit (file_contents, "\n", 0);
       len = g_strv_length (history_from_file);
-      if (strlen (history_from_file[len-1]) == 0)
+      if (len > 0 && strlen (history_from_file[len-1]) == 0)
 	{
 	  g_free (history_from_file[len-1]);
 	  history_from_file[len-1] = NULL;