Fix $temp_dir var

functions

@@ -382,8 +382,8 @@ perform_installation() {
 	echo "${b}Finished installing dependencies.${x}"
 	echo
 
-	mkdir -p $tls_dir
-	mkdir -p $tmp_dir
+	mkdir -p "$tls_dir"
+	mkdir -p "$temp_dir"
 
 	################################################################################
 
@@ -1350,9 +1350,9 @@ perform_installation() {
 	/usr/sbin/service sslh stop &> /dev/null || true
 	ssh_port="$(cat $os_base_dir/inception/ssh-port)"
 	apt-get -y install libwrap0-dev libconfig8-dev || true
-	rm -r $tmp_dir/sslh &> /dev/null || true
-	git clone https://github.com/yrutschle/sslh $tmp_dir/sslh
-	( cd $tmp_dir/sslh && make install && make && cp sslh-select /usr/local/sbin/sslh )
+	rm -r "$temp_dir/sslh" &> /dev/null || true
+	git clone https://github.com/yrutschle/sslh "$temp_dir/sslh"
+	( cd "$temp_dir/sslh" && make install && make && cp sslh-select /usr/local/sbin/sslh )
 	sed -i "s|this_ipv4-var|${this_ipv4}|g" $source_dir/conf/sslh/etc-sslh.cfg
 	if [ $ipv6_avail = "y" ]
 	then
@@ -1370,7 +1370,7 @@ perform_installation() {
 	chmod +x /etc/init.d/sslh
 	update-rc.d sslh defaults
 	systemctl daemon-reload
-	rm -r $tmp_dir/sslh
+	rm -r "$temp_dir/sslh"
 	mkdir -p /var/run/sslh
 	touch /var/run/sslh/sslh.pid
 	service sslh restart || true