try to figure why the cb test fails on travis

diff --git a/bindings/perl-shared/t/callback.t b/bindings/perl-shared/t/callback.t
index 0264ad909619f1880491d00f6be3550e24ebb8d4..6e5d9b2c253051e210885346556b5e9d0ee83a24 100755 (executable)
--- a/bindings/perl-shared/t/callback.t
+++ b/bindings/perl-shared/t/callback.t
@@ -62,4 +62,6 @@ if (my $ERROR = RRDs::error) {
    die "RRD ERROR: $ERROR\n";
 }
 
+use Data::Dumper;
+warn Dumper $result;
 ok("callback",$result->{'print[0]'} eq '0.724496');