#38 Machines xml Backup doesn't work if default machine folder contains spaces

[Davide Ramo]

VBoxManage list systemproperties --> Default machine folder: /root/VirtualBox VMs

$machine_folder results /root/VirtualBoxVMs

and the script doesn't backup machines .xml and snapshots

[Davide Ramo]

to fix:

substitute

machine_folder=$($vbox_command list systemproperties | grep "Default machine" | cut -d":" -f2 | sed -e 's/[[:space:]]//g')

with

machine_folder=$($vbox_command list systemproperties | grep "Default machine" | cut -d":" -f2 | sed -e 's/^[ \t]*//'

line