From a8896ebd738a5c3b9ba456689f959c8f1c1bbead Mon Sep 17 00:00:00 2001
From: Jon Evans <jon@craftyjon.com>
Date: Fri, 2 Apr 2021 20:29:25 -0400
Subject: [PATCH] Don't show leading ratline for unconnected net

Fixes https://gitlab.com/kicad/code/kicad/-/issues/8040
---
 pcbnew/router/pns_topology.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pcbnew/router/pns_topology.cpp b/pcbnew/router/pns_topology.cpp
index c54d48c153..c2a7b29325 100644
--- a/pcbnew/router/pns_topology.cpp
+++ b/pcbnew/router/pns_topology.cpp
@@ -106,7 +106,7 @@ bool TOPOLOGY::LeadingRatLine( const LINE* aTrack, SHAPE_LINE_CHAIN& aRatLine )
 
     JOINT* jt = tmpNode->FindJoint( track.CPoint( -1 ), &track );
 
-    if( !jt )
+    if( !jt || jt->Net() <= 0 )
        return false;
 
     if( ( !track.EndsWithVia() && jt->LinkCount() >= 2 )