Bug#386178: debian-policy: "$RET" not "RET"

[Justin Pryzby <justinpryzby@users.sourceforge.net>]

Package: debian-policy
Version: 3.7.2.1
Severity: minor

The following demonstration of dpkg-statoverride in maintscripts
intends to reference a variable:

              if [ "RET" = "true" ] ; then
                   ^^^^^
                dpkg-statoverride --update --add sysuser root 4755 $i
              fi