rootfs.py: Make set -x not break rootfs creation

The rootfs logfile check errors out if it finds an "exit 1" in
a log. But consider the shell idiom:
	if ! $command; then exit 1; fi
and consider a postinstall script with a "set -x" for debugging
purposes (to get log output in /var/log/postinstall.log.)

Solution: Ignore lines prefixed with a +, because those show shell
code even if a specific fragment won't be executed.

Signed-off-by: Peter Seebach <peter.seebach@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

0 files changed, 0 insertions, 0 deletions