Fixed a regression (crash when an admin with no role on the project try to create an issue)

git-svn-id: http://redmine.rubyforge.org/svn/trunk@420 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/models/issue_status.rb

@@ -38,16 +38,18 @@ class IssueStatus < ActiveRecord::Base
   # Returns an array of all statuses the given role can switch to
   # Uses association cache when called more than one time
   def new_statuses_allowed_to(role, tracker)
-    new_statuses = [self] + workflows.select {|w| w.role_id == role.id && w.tracker_id == tracker.id}.collect{|w| w.new_status}
+    new_statuses = [self]
+    new_statuses += workflows.select {|w| w.role_id == role.id && w.tracker_id == tracker.id}.collect{|w| w.new_status} if role && tracker
     new_statuses.sort{|x, y| x.position <=> y.position }
   end
   
   # Same thing as above but uses a database query
   # More efficient than the previous method if called just once
   def find_new_statuses_allowed_to(role, tracker)  
-    new_statuses = [self] + workflows.find(:all, 
-                                           :include => :new_status,
-                                           :conditions => ["role_id=? and tracker_id=?", role.id, tracker.id]).collect{ |w| w.new_status }
+    new_statuses = [self]
+    new_statuses += workflows.find(:all, 
+                                   :include => :new_status,
+                                   :conditions => ["role_id=? and tracker_id=?", role.id, tracker.id]).collect{ |w| w.new_status }  if role && tracker
     new_statuses.sort{|x, y| x.position <=> y.position }
   end