fixed seg fault in DRC just after a .ses import

pcbnew/drc.cpp

@@ -187,6 +187,10 @@ int DRC::Drc( ZONE_CONTAINER * aArea, int CornerIndex )
 
 void DRC::RunTests()
 {
+    // Ensure ratsnest is up to date:
+    if( (m_pcb->m_Status_Pcb & LISTE_CHEVELU_OK) == 0 )
+        m_mainWindow->Compile_Ratsnest( NULL, true );
+
     // someone should have cleared the two lists before calling this.
 
     // test pad to pad clearances, nothing to do with tracks, vias or zones.
@@ -197,7 +201,7 @@ void DRC::RunTests()
     testTracks();
 
     // Before testing segments and unconnected, refill all zones:
-    // this is a good caution, and mandatory if using filling zones by solid polygons
+    // this is a good caution, because filled areas can be outdated.
     m_mainWindow->Fill_All_Zones( false );
 
     // test zone clearances to other zones, pads, tracks, and vias

pcbnew/makefile.include

@@ -256,7 +256,7 @@ librairi.o: librairi.cpp
 
 edgemod.o: edgemod.cpp
 
-muonde.o: muonde.cpp drag.h gen_self.h
+muonde.o: muonde.cpp drag.h
 
 autorout.o: autorout.cpp cell.h autorout.h
 

pcbnew/ratsnest.cpp

@@ -104,7 +104,7 @@ void WinEDA_BasePcbFrame::Compile_Ratsnest( wxDC* DC, bool display_status_pcb )
  *  Must be called after a board change (changes for
  *  pads, footprints or a read netlist ).
  *
- *  if display_status_pcb != 0 : Display the computation results
+ *  if display_status_pcb == true : Display the computation results
  */
 {
     wxString msg;

pcbnew/specctra_import.cpp

@@ -115,6 +115,15 @@ void WinEDA_PcbFrame::ImportSpecctraSession( wxCommandEvent& event )
 
     GetScreen()->SetModify();
     GetBoard()->m_Status_Pcb = 0;
+    
+    /* At this point we should call Compile_Ratsnest()
+     * but this could be time consumming.
+     * So if incorrect number of Connecred and No connected pads is accepted
+     * until Compile_Ratsnest() is called (when track tool selected for instance)
+     * leave the next line commented
+     * Otherwise uncomment this line
+    */
+    //Compile_Ratsnest( NULL, true );
 
     Affiche_Message( wxString( _("Session file imported and merged OK.")) );