It is to improve the readability of calls to osl::Condition::wait.

Change-Id: I5945343c5a7e4729ab599380414d18280bd176fe
Signed-off-by: Gurkaran <gurkran@gmail.com>
Reviewed-on: https://gerrit.libreoffice.org/23417Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Noel Grandin <noelgrandin@gmail.com>