remove redundant empty lines from app/models/auth_source_ldap.rb

git-svn-id: http://svn.redmine.org/redmine/trunk@13169 e93f8b46-1217-0410-a6f0-8f06a7374b81
fix ProjectsHelperTest fails when config.threadsafe! is enabled (#12097)

git-svn-id: http://svn.redmine.org/redmine/trunk@13170 e93f8b46-1217-0410-a6f0-8f06a7374b81