quacks-ingredients: -counts: Skip empty outputs

Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>

diff --git a/quacks-ingredients-counts b/quacks-ingredients-counts
index a96ac16cba843ebea62a634506ecfc8903254d65..ae55648450fd3a854f3b9d0439e673a0d415bac5 100755 (executable)
--- a/quacks-ingredients-counts
+++ b/quacks-ingredients-counts
@@ -60,6 +60,7 @@ sub wrtoplevel () {
     print "module ${which}_$name(){ ////toplevel\n";
     my $cs = $count{$name};
     my $total = 0; $total += $_ foreach values %$cs;
+    return unless $total;
     my $rowsz = ceil(sqrt($total));
     my $nrows = ceil($total / $rowsz);
     $total_count += $total;