Fix static analysis failures

src/freedombone-utils-setup

@@ -28,23 +28,23 @@
 # You should have received a copy of the GNU Affero General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-if [ ! $PROJECT_NAME ]; then
+if [ ! "$PROJECT_NAME" ]; then
     PROJECT_NAME='freedombone'
 fi
 
-if [ ! $LOCAL_NAME ]; then
+if [ ! "$LOCAL_NAME" ]; then
     LOCAL_NAME=${PROJECT_NAME}
 fi
 
 DEFAULT_DOMAIN_NAME=
 DEFAULT_DOMAIN_CODE=
 MY_USERNAME=
-if [ ! $SYSTEM_TYPE ]; then
+if [ ! "$SYSTEM_TYPE" ]; then
     SYSTEM_TYPE="full"
 fi
 
 # An optional configuration file which overrides some of these variables
-if [ ! $CONFIGURATION_FILE ]; then
+if [ ! "$CONFIGURATION_FILE" ]; then
     CONFIGURATION_FILE="$HOME/${PROJECT_NAME}.cfg"
 fi