Fix bustage due to bug 885646: the Defined-Or operator // doesn't exist in Perl 5.8.x

diff --git a/Bugzilla/BugMail.pm b/Bugzilla/BugMail.pm
index b1b9b39a4cc93fb87afae0a5c241999e1c8caa45..442d19fcd80e7a0c586f1e54805b583a0ba52b8f 100644 (file)
--- a/Bugzilla/BugMail.pm
+++ b/Bugzilla/BugMail.pm
@@ -444,8 +444,8 @@ sub _get_diffs {
             && $diff->{field_name}        eq $changes[-1]->{field_name}
             && $diff->{bug_when}          eq $changes[-1]->{bug_when}
             && $diff->{who}               eq $changes[-1]->{who}
-            && ($diff->{attach_id} // 0)  == ($changes[-1]->{attach_id} // 0)
-            && ($diff->{comment_id} // 0) == ($changes[-1]->{comment_id} // 0)
+            && ($diff->{attach_id} || 0)  == ($changes[-1]->{attach_id} || 0)
+            && ($diff->{comment_id} || 0) == ($changes[-1]->{comment_id} || 0)
         ) {
             my $old_change = pop @changes;
             $diff->{old} = join_activity_entries($diff->{field_name}, $old_change->{old}, $diff->{old});