Minor fixes (check for net codes size for ratsnest, cursor coordinates are not always shown as if the cursor was snapped).

common/drawframe.cpp

@@ -1023,7 +1023,6 @@ wxPoint EDA_DRAW_FRAME::GetCrossHairPosition( bool aInvertY ) const
     if( IsGalCanvasActive() )
     {
         VECTOR2I cursor = GetGalCanvas()->GetViewControls()->GetCursorPosition();
-        cursor = GetGalCanvas()->GetGAL()->GetGridPoint( cursor );
 
         return wxPoint( cursor.x, cursor.y );
     }

include/wxPcbStruct.h

@@ -216,8 +216,6 @@ public:
     bool m_show_microwave_tools;
     bool m_show_layer_manager_tools;
 
-
-public:
     PCB_EDIT_FRAME( wxWindow* father, const wxString& title,
                     const wxPoint& pos, const wxSize& size,
                     long style = KICAD_DEFAULT_DRAWFRAME_STYLE );

pcbnew/ratsnest_data.cpp

@@ -1024,7 +1024,7 @@ void RN_DATA::updateNet( int aNetCode )
 {
     assert( aNetCode < (int) m_nets.size() );
 
-    if( aNetCode < 1 )
+    if( aNetCode < 1 || aNetCode > m_nets.size() )
         return;
 
     m_nets[aNetCode].ClearSimple();