Someone reported that if some other shell function has left i or j set,
the concat_dtb_helper function could fail. Add a small tweak to avoid this.
[YOCTO #14815]
(From OE-Core rev: d219c97bdf5d30be89795fbf9b66ddc367bef384)
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>