viewdiff: diff_header: shorten function, slightly

It makes for easier reading with gigantic fonts.

1 files changed, 2 insertions, 6 deletions

diff --git a/lib/PublicInbox/ViewDiff.pm b/lib/PublicInbox/ViewDiff.pm
index b9115669..fba3d76c 100644
--- a/lib/PublicInbox/ViewDiff.pm
+++ b/lib/PublicInbox/ViewDiff.pm
@@ -124,12 +124,8 @@ sub diff_header ($$$) {
                 $dctx->{Q} = '?b='.uri_escape_path($pb);
         } else {
                 my @q;
-                if ($pb ne '/dev/null') {
-                        push @q, 'b='.uri_escape_path($pb);
-                }
-                if ($pa ne '/dev/null') {
-                        push @q, 'a='.uri_escape_path($pa);
-                }
+                push @q, 'b='.uri_escape_path($pb) if $pb ne '/dev/null';
+                push @q, 'a='.uri_escape_path($pa) if $pa ne '/dev/null';
                 $dctx->{Q} = '?'.join('&', @q);
         }