LDAP_* coder cleanup

This is a general issue for coder cleanup. Using the coder module to cleanup makes submitting patches easier and self documenting easier as noted at: https://drupal.org/node/1115704#comment-7929993

If anyone wants to commit coder cleanup, submit one patch for each module in this thread. Coder cleanup is as simple as installing the coder module and fixing spacing, code conventions, and self documentation comments. There are some coder errors related to unsafe text that cannot be fixed in the ldap module because stripping, escaping, or otherwise cleaning the data presents additional issues.

Patches should include minor issues and cover a whole module; its not worth bothering with any coder related patches that are smaller.