If one of the parse threads disappears during parsing for some reason, bitbake
currently hangs. Avoid this (and zombie threads hanging around) by joining()
threads which have exited.
(Bitbake rev: 920111a330be59e5be2068a8f1a9edcbc6c14402)
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
(cherry picked from commit dc86a533d951d13643ce446533370da804782afc)
Signed-off-by: Anuj Mittal <anuj.mittal@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>