Unlock locked person only in case is nothing is ongoing.

master/bt5/vifib_slap/SkinTemplateItem/portal_skins/vifib_slap/Person_manageLockByBalance.xml

@@ -77,8 +77,8 @@ if context.portal_catalog.countResults(\n
     # there are ongoing old payments, shall be locked\n
     if not locked and operation == \'lock\':\n
         context.lock(comment="Payment transaction not paid for more than %s days" % maximum_due_date)\n
-else:\n
-   # there are no ongoing payments and balance is acceptable\n
+elif balance >= 0.0:\n
+   # there are no ongoing payments and customer owns nothing\n
    if locked and operation == \'unlock\':\n
      context.unlock()\n
 

master/bt5/vifib_slap/bt/revision

-532
\ No newline at end of file
+533
\ No newline at end of file