mdadm/test: use the first element of array as parsing condition

it would complain "too many arguments" when array[] has
few members, it's proper to check whether or not array[0]
is null.

Reported-by: Xiao Ni <xni@redhat.com>
Signed-off-by: Zhilong Liu <zlliu@suse.com>
Signed-off-by: Jes Sorensen <jsorensen@fb.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/test b/test
index 87e2df2d..25268a0f 100755
--- a/test
+++ b/test
@@ -75,7 +75,7 @@ save_log() {
 		echo
 	elif [ "$DEVTYPE" == 'loop' -o "$DEVTYPE" == 'disk' ]
 	then
-		if [ ! -z ${array[@]} -a ${#array[@]} -ge 1 ]
+		if [ ! -z "$array" -a ${#array[@]} -ge 1 ]
 		then
 			md_disks=($($mdadm -D -Y ${array[@]} | grep "/dev/" | cut -d'=' -f2))
 			cat /proc/mdstat | grep -q "bitmap"