Merge branch 'ce-1974-update-user-name-upon-ldap-sync' into 'master'

Handle nil name in Gitlab::Auth::LDAP::Person#name

See merge request gitlab-org/gitlab-ce!26364

lib/gitlab/auth/ldap/person.rb

@@ -69,7 +69,7 @@ module Gitlab
         end
 
         def name
-          attribute_value(:name).first
+          attribute_value(:name)&.first
         end
 
         def uid