X-Git-Url: http://dxcluster.net/gitweb/gitweb.cgi?a=blobdiff_plain;f=perl%2FDXUtil.pm;h=24fa840ff12962d50273bf7fbf3f99c3fc99cdd8;hb=e49e641d1a518e4f3b4308e078e06653e0b91a38;hp=f7e52c9a92cb727e8c5431c4f9cd4d2d63e3d5e7;hpb=3b73a2dde8b378db6b56438699c5a1f233194dbf;p=spider.git

diff --git a/perl/DXUtil.pm b/perl/DXUtil.pm
index f7e52c9a..24fa840f 100644
--- 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 {