From a9bd037b584950adf40aacd7629c79764a96cde9 Mon Sep 17 00:00:00 2001
From: Matthias Koefferlein <matthias@koefferlein.de>
Date: Tue, 17 Dec 2019 22:23:43 +0100
Subject: [PATCH] Some code cleanup with performance impact

---
 src/db/db/dbBoxScanner.h | 1 -
 1 file changed, 1 deletion(-)

diff --git a/src/db/db/dbBoxScanner.h b/src/db/db/dbBoxScanner.h
index eefd7df5a..32ab34bc0 100644
--- a/src/db/db/dbBoxScanner.h
+++ b/src/db/db/dbBoxScanner.h
@@ -419,7 +419,6 @@ private:
             for (iterator_type j = c; j < i; ++j) {
               if (bs_boxes_overlap (bc (*i->first), bc (*j->first), enl)) {
                 if (seen.insert (std::make_pair (i->first, j->first)).second) {
-                  seen.insert (std::make_pair (j->first, i->first));
                   rec.add (i->first, i->second, j->first, j->second);
                   if (rec.stop ()) {
                     return false;