fix 500 when viewing a nonexsitaint status message

app/controllers/status_messages_controller.rb

@@ -73,6 +73,7 @@ class StatusMessagesController < ApplicationController
 
   def show
     @status_message = current_user.find_visible_post_by_id params[:id]
+    if @status_message
       @object_aspect_ids = @status_message.aspects.map{|a| a.id}
 
       # mark corresponding notification as read
@@ -82,6 +83,9 @@ class StatusMessagesController < ApplicationController
       end
 
       respond_with @status_message
+    else
+      redirect_to :back
+    end
   end
 
 end

app/views/people/show.html.haml

@@ -58,7 +58,7 @@
       = render 'photos/index', :photos => @posts
     - else
       #main_stream.stream
-        = render 'shared/stream', :posts => @fakes
+        = render 'shared/stream', :posts => @fakes, :commenting_disabled => @commenting_disabled
         %a.paginate
           = t("more")
     = will_paginate @posts

spec/controllers/status_messages_controller_spec.rb

@@ -43,6 +43,12 @@ describe StatusMessagesController do
         note.reload
       }.should change(note, :unread).from(true).to(false)
     end
+
+
+    it 'redirects to back if there is no status message' do
+      get :show, :id => 2345
+      response.status.should == 302
+    end
   end
 
   describe '#create' do