Message if microblog domain name is not specified

src/freedombone

@@ -7193,7 +7193,8 @@ function install_gnu_social {
       return
   fi
   if [ ! $MICROBLOG_DOMAIN_NAME ]; then
-      return
+      echo 'No domain name was given for the microblog'
+      exit 7359
   fi
 
   install_mariadb