quotes

src/freedombone-image-hardware-setup

     fi
 
     if [ -n "$command_line" ] ; then
-        echo flash-kernel flash-kernel/linux_cmdline string "$command_line" | debconf-set-selections
+        echo "flash-kernel flash-kernel/linux_cmdline string \"$command_line\"" | debconf-set-selections
     fi
 
     apt-get install -y flash-kernel