quick bugfix

src/mailsrv/assets/bin/maint

@@ -12,7 +12,7 @@ for user in *; do
     # assume no messages in INBOX are older than this year
     #year=2000
     year=$(($currentyear-1))
-    while [[ year -le $currentyear ]]; do
+    while [[ $year -le $currentyear ]]; do
         # create an Archive/$year mailbox
         doveadm mailbox create -u $user -s Archive.$year 2> /dev/null