Use [ -n "$x" ] in place of [ ! -z "$x" ] in chutney-git-bisect

# Skips the test if <skip-flavour> fails (default no skip).

CHUTNEY_TRIES=3

if [ ! -z "$1" ]; then

if [ -n "$1" ]; then

    CHUTNEY_TRIES="$1"

fi

if [ ! -z "$2" ]; then

if [ -n "$2" ]; then

    cd "$2" || exit

fi

CHUTNEY_TEST_CMD="make test-network-all"

if [ ! -z "$3" ]; then

if [ -n "$3" ]; then

    CHUTNEY_TEST_CMD="$CHUTNEY_PATH/tools/test-network.sh --flavour $3"

fi

CHUTNEY_SKIP_ON_FAIL_CMD="true"

if [ ! -z "$4" ]; then

if [ -n "$4" ]; then

    CHUTNEY_SKIP_ON_FAIL_CMD="$CHUTNEY_PATH/tools/test-network.sh --flavour $4"

fi