Proper handling of "Nothing to do"
Proper handling of "Nothing to do"

Rather than silently panic with a division by zero, test for the
"nothing to do" condition and exit with status 0 and a friendly
message.

TomG713/scaleover-plugin,TomG713/scaleover-plugin,shinji62/scaleover-plugin,krujos/scaleover-plugin,shinji62/scaleover-plugin,krujos/scaleover-plugin