Make sure the error value is initialised and update the string match
that we have to identify bitbake's current startup status.
Patch contribution from Eduard Bartosh
(Bitbake rev: 915ba08a8a3013e9787e564f2ffd8698c948f433)
Signed-off-by: Michael Wood <michael.g.wood@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>