[PATCH] fsck.btrfs: Fix bashism and bad getopts processing

[Dimitri John Ledkov <dimitri.j.ledkov@intel.com>]

First fix == bashism, as that is not accepted by e.g. Debian/Ubuntu
dash.

Secondly shift OPTIND, such that last parameter is checked to exist.

Signed-off-by: Dimitri John Ledkov <dimitri.j.ledkov@intel.com>
---
 fsck.btrfs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/fsck.btrfs b/fsck.btrfs
index f056a7f..20b070a 100755
--- a/fsck.btrfs
+++ b/fsck.btrfs
@@ -26,12 +26,13 @@ do
 	a|A|p|y)	AUTO=true;;
 	esac
 done
+shift $(($OPTIND -1))
 eval DEV=\${$#}
 if [ ! -e $DEV ]; then
 	echo "$0: $DEV does not exist"
 	exit 8
 fi
-if [ "$AUTO" == "false" ]; then
+if ! $AUTO; then
 	echo "If you wish to check the consistency of a BTRFS filesystem or"
 	echo "repair a damaged filesystem, see btrfs(8) subcommand 'check'."
 fi
-- 
2.1.4