replace tabs to spaces at app/models/query.rb

git-svn-id: http://svn.redmine.org/redmine/trunk@13088 e93f8b46-1217-0410-a6f0-8f06a7374b81

Author: marutosi

app/models/query.rb

@@ -159,8 +159,8 @@ class StatementInvalid < ::ActiveRecord::StatementInvalid
 
   after_save do |query|
     if query.visibility_changed? && query.visibility != VISIBILITY_ROLES
-	    query.roles.clear
-	  end
+      query.roles.clear
+    end
   end
 
   class_attribute :operators