[PATCH 2/4] www: mail_diff: fix optional address obfuscation

[Eric Wong]

We need to load the proper package and fully-qualify the sub
call since we shouldn't load Hval in lei.  Some users use this
feature even if its broken, oh well :<
---
 lib/PublicInbox/MailDiff.pm | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/lib/PublicInbox/MailDiff.pm b/lib/PublicInbox/MailDiff.pm
index b1c12d6d..98284b23 100644
--- a/lib/PublicInbox/MailDiff.pm
+++ b/lib/PublicInbox/MailDiff.pm
@@ -47,6 +47,8 @@ sub prep_a ($$) {
        dump_eml($self, "$self->{tmp}/a", $eml);
 }
 
+# WWW-specific stuff below (TODO: split out for non-lei)
+
 sub next_smsg ($) {
        my ($self) = @_;
        my $ctx = $self->{ctx};
@@ -62,9 +64,12 @@ sub next_smsg ($) {
 
 sub emit_msg_diff {
        my ($bref, $self) = @_; # bref is `git diff' output
+       require PublicInbox::Hval;
+
        # will be escaped to `&#8226;' in HTML
        $self->{ctx}->{ibx}->{obfuscate} and
-               obfuscate_addrs($self->{ctx}->{ibx}, $$bref, "\x{2022}");
+               PublicInbox::Hval::obfuscate_addrs($self->{ctx}->{ibx},
+                                               $$bref, "\x{2022}");
        print { $self->{ctx}->{zfh} } '</pre><hr><pre>' if $self->{nr} > 1;
        flush_diff($self->{ctx}, $bref);
        next_smsg($self);