abuild: Fix shellcheck errors

Fix 6 new errors found by shellcheck 0.4.6
SC2155: Declare and assign separately to avoid masking return values.
4 x SC2086: Double quote to prevent globbing and word splitting.
SC2196: egrep is non-standard and deprecated. Use grep -E instead.

One of the SC2086 errors is masked because it needs word splitting.

Change-Id: I7f869e6d208f7247f739619c538be6075b802719
Signed-off-by: Martin Roth <gaumless@gmail.com>
Reviewed-on: https://review.coreboot.org/27597
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Alex Thiessen <alex.thiessen.de+coreboot@gmail.com>

0 files changed, 0 insertions, 0 deletions