Logic simplification

git-svn-id: http://redmine.rubyforge.org/svn/branches/work@1211 e93f8b46-1217-0410-a6f0-8f06a7374b81

git/lib/redmine/scm/adapters/git_adapter.rb

@@ -208,9 +208,7 @@ module Redmine
         
         def diff(path, identifier_from, identifier_to=nil, type="inline")
           path ||= ''
-          if identifier_to
-            identifier_to = identifier_to 
-          else
+          if !identifier_to
             identifier_to = nil
           end