ITS#9526 slapd-mdb tools: fix cursor init check

3 jobs for master in 46 minutes and 18 seconds (queued for 2 seconds)
Status Name Job ID Coverage
  Build
passed build-gnutls-mit-standalone-lloadd #6494

00:44:36

passed build-no-threads-no-slapd #6492

00:02:47

passed build-openssl-heimdal-lloadd #6493

00:46:17