Fix compatibility with Ruby > 1.9

init.rb

@@ -24,4 +24,4 @@ Redmine::Plugin.register :redmine_cas do
   ActionDispatch::Callbacks.before do
     RedmineCAS.setup!
   end
-end
+end

lib/redmine_cas.rb

@@ -37,4 +37,4 @@ module RedmineCAS
     end
     attrs
   end
-end
+end

lib/redmine_cas/account_controller_patch.rb

@@ -17,4 +17,4 @@ module RedmineCAS
       end
     end
   end
-end
+end

lib/redmine_cas/application_controller_patch.rb

@@ -38,7 +38,7 @@ module RedmineCAS
           else
             self.logged_user = user
           end
-          redirect_to url_for(params.merge(ticket: nil))
+          redirect_to url_for(params.merge(:ticket => nil))
         else
           # CASClient called redirect_to
         end
@@ -53,4 +53,4 @@ module RedmineCAS
       end
     end
   end
-end
+end