Eliminate warning message for uninitialized variable use

diff --git a/ILS.pm b/ILS.pm
index 2ee1ded..a00aaac 100644 (file)
--- a/ILS.pm
+++ b/ILS.pm
@@ -95,7 +95,7 @@ sub checkout {
     if ($circ->ok) {
        # If the item is already associated with this patron, then
        # we're renewing it.
-       $circ->renew_ok($item->{patron} eq $patron_id);
+       $circ->renew_ok($item->{patron} && ($item->{patron} eq $patron_id));
        $item->{patron} = $patron_id;
        $item->{due_date} = time + (14*24*60*60); # two weeks
        push(@{$patron->{items}}, $item_id);