- prevent using NULL as an array index (which is illegal and throws   a warning). # this seems to be a PHP bug with error-handling...
- prevent using NULL as an array index (which is illegal and throws
  a warning).
# this seems to be a PHP bug with error-handling...


git-svn-id: 526f3b90ad6d9b1dfe840af828070ca3d99521ac@2857 d2cacbed-c0f6-0310-851a-9dad52fc623a

johannes85/core