when drc denies via insertion, bridge track not deleted

pcbnew/editrack-part2.cpp

@@ -246,7 +246,16 @@ bool WinEDA_PcbFrame::Other_Layer_Route( TRACK* track, wxDC* DC )
         /* DRC fault: the Via cannot be placed here ... */
         delete Via;
         GetScreen()->m_Active_Layer = old_layer;
+
         DrawPanel->ManageCurseur( DrawPanel, DC, FALSE );
+        
+        // delete the track(s) added in Begin_Route() 
+        while( g_TrackSegmentCount > itmp )
+        {
+            Delete_Segment( DC, g_CurrentTrackSegment );
+        }
+        SetCurItem( g_CurrentTrackSegment );
+        
         return false;
     }