fix mojo complaints in check_cache

[spider.git] / perl / DXUtil.pm

diff --git a/perl/DXUtil.pm b/perl/DXUtil.pm
index f7e52c9a92cb727e8c5431c4f9cd4d2d63e3d5e7..24fa840ff12962d50273bf7fbf3f99c3fc99cdd8 100644 (file)
--- a/perl/DXUtil.pm
+++ b/perl/DXUtil.pm
@@ -539,7 +539,7 @@ sub difft
        if (ref $b eq 'ARRAY') {
                $t = $b->[1] - $b->[0];
        } else {
-               if ($adds >= $b) {
+               if ($adds && $adds >= $b) {
                        $t = $adds - $b;
                        $adds = shift;
                } else {