Fixed issue 04265: Users see "Error / We are sorry but you don't have permission to do this..." when accessing a survey that doesn't exist instead of expected Survey is not available message

git-svn-id: file:///Users/Shitiz/Downloads/lssvn/source/limesurvey@8775 b72ed6b6-b9f8-46b5-92b4-906544132732