block/013: fix shellcheck warning

Signed-off-by: Omar Sandoval <osandov@fb.com>

diff --git a/tests/block/013 b/tests/block/013
index dbba9ff3a6ecd4a1b434322a5e19fdbdb9203cb4..415b34dcc5ef47d531beeb9300ed4e5784b916f7 100755 (executable)
--- a/tests/block/013
+++ b/tests/block/013
@@ -37,7 +37,8 @@ test_device() {
        mkdir "$TMPDIR/mntpoint"
        mount "$TEST_DEV" "$TMPDIR/mntpoint"
 
-       local out="$(blockdev --rereadpt "$TEST_DEV" 2>&1)"
+       local out
+       out="$(blockdev --rereadpt "$TEST_DEV" 2>&1)"
        if ! grep -o "Device or resource busy" <<< "$out"; then
                echo "$out"
        fi