From e9009ea609ccdfbda8e46b07e70324c148e8c4ce Mon Sep 17 00:00:00 2001
From: Raphael <raphael@joindiaspora.com>
Date: Wed, 15 Sep 2010 18:23:54 -0700
Subject: [PATCH] Downcase username only if it is there

---
 app/models/user.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/app/models/user.rb b/app/models/user.rb
index ec6acbe3a..f2a213d1c 100644
--- a/app/models/user.rb
+++ b/app/models/user.rb
@@ -311,7 +311,7 @@ class User
   end
 
   def downcase_username
-    username.downcase!
+    username.downcase! if username
   end