Eeschema: ensure the netlist data is up to date before generating the netlist

Fixes #4779
https://gitlab.com/kicad/code/kicad/issues/4779

eeschema/cross-probing.cpp

@@ -43,6 +43,7 @@
 #include <netlist_exporters/netlist_exporter_kicad.h>
 #include <tools/ee_actions.h>
 #include <tools/sch_editor_control.h>
+#include <advanced_config.h>
 
 
 SCH_ITEM* SCH_EDITOR_CONTROL::FindComponentAndItem( const wxString& aReference,
@@ -467,6 +468,11 @@ void SCH_EDIT_FRAME::KiwayMailIn( KIWAY_EXPRESS& mail )
             NETLIST_EXPORTER_KICAD exporter( &Schematic() );
             STRING_FORMATTER formatter;
 
+            // TODO remove once real-time connectivity is a given
+            if( !ADVANCED_CFG::GetCfg().m_realTimeConnectivity || !CONNECTION_GRAPH::m_allowRealTime )
+                // Ensure the netlist data is up to date:
+                RecalculateConnections( NO_CLEANUP );
+
             exporter.Format( &formatter, GNL_ALL | GNL_OPT_KICAD );
 
             payload = formatter.GetString();

eeschema/netlist_generator.cpp

@@ -48,6 +48,9 @@ bool SCH_EDIT_FRAME::WriteNetListFile( int aFormat, const wxString& aFullFileNam
     // Ensure all power symbols have a valid reference
     Schematic().GetSheets().AnnotatePowerSymbols();
 
+    // Ensure the netlist data is up to date:
+    RecalculateConnections( NO_CLEANUP );
+
     if( !ReadyToNetlist( false ) )
         return false;