Tumblr's API sometimes returns an array, sometimes not

oa-oauth/lib/omniauth/strategies/tumblr.rb

@@ -24,7 +24,6 @@ def initialize(app, consumer_key = nil, consumer_secret = nil, options = {}, &bl
       end
 
       def auth_hash
-        user = user_hash['tumblr']['tumblelog'][0]
         OmniAuth::Utils.deep_merge(super, {
           'uid' => user['name'],
           'user_info' => user_info,
@@ -33,7 +32,6 @@ def auth_hash
       end
 
       def user_info
-        user = user_hash['tumblr']['tumblelog'][0]
         {
           'nickname' => user['name'],
           'name' => user['title'],
@@ -44,6 +42,15 @@ def user_info
         }
       end
 
+      def user
+        tumblelogs = user_hash['tumblr']['tumblelog']
+        if tumblelogs.kind_of?(Array)
+          @user ||= tumblelogs[0]
+        else
+          @user ||= tumblelogs
+        end
+      end
+
       def user_hash
         url = "http://www.tumblr.com/api/authenticate"
         @user_hash ||= Hash.from_xml(@access_token.get(url).body)