[PATCH] * test-lib.sh: Guard against bogus $device_mapper_required= value in env.

[Jim Meyering]

---
 tests/test-lib.sh |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/tests/test-lib.sh b/tests/test-lib.sh
index e967545..8b76f6b 100644
--- a/tests/test-lib.sh
+++ b/tests/test-lib.sh
@@ -287,7 +287,7 @@ done
 test_dir_rand_=3D$($abs_top_srcdir/build-aux/mktempd $test_dir_ parted-$th=
is_test.XXXXXXXXXX) \
     || error "failed to create temporary directory in $test_dir_"

-if test $skip_ =3D 0 && test "$device_mapper_required_" !=3D ''; then
+if test $skip_ =3D 0 && test "x$device_mapper_required_" !=3D 'x'; then
   . $abs_top_srcdir/tests/dm-utils.sh || exit 1
 fi

--=20
1.5.6.rc0.30.g7c3f3