Do not disconnect from LDAP if password modification fails (#1644)

6 jobs for master in 10 minutes and 10 seconds (queued for 9 minutes and 28 seconds)
Status Job ID Name Coverage
  Build
passed #11502
build_bionic

00:03:11

passed #11501
build_buster

00:03:09

passed #11500
build_stretch

00:02:49

 
  Sign
passed #11503
sign

00:00:30

 
  Deploy
passed #11504
pages

00:00:30

passed pages:deploy

00:00:01