Duplicate CVEs reported.

it looks like sub test is pulling in want from

```
push @{$self->{want}} => sort grep { $self->{j}{db}{$_} } keys %{$self->{prereq}};
```

which can some times be the name of the module we're checking. So you need to de-dupe this later. 

```diff
-    foreach my $m (@w }) {
+    foreach my $m (do { my %seen; grep { !$seen{$_}++ } @w }) {
```