Author: cescobedo
MDL-61296 auth_ldap: remove PHP notices when field does not exist.
http://git.moodle.org/gw?p=moodle.git;a=commit;h=2a8f28520d6597669ae8e0e963dd36c1ee730516
http://github.com/moodle/moodle/commit/2a8f28520d6597669ae8e0e963dd36c1ee730516
+ 3.5 en [updateremfailfield,auth_ldap]