Fixed some build errors

src/plugins/tools/view_25d/lay_plugin/layD25Plugin.cc

@@ -61,7 +61,7 @@ public:
 
 private:
   lay::LayoutView *mp_view;
-  lay::D25ToolDialog *mp_dialog;
+  lay::D25View *mp_dialog;
 };
 
 class D25PluginDeclaration

src/plugins/tools/view_25d/lay_plugin/layD25View.cc

@@ -22,6 +22,7 @@
 
 
 #include "layD25View.h"
+#include "layLayoutView.h"
 
 #include "ui_D25View.h"
 
@@ -31,7 +32,7 @@ namespace lay
 {
 
 D25View::D25View (QWidget *parent)
-  : QDialog (parent), mp_view (0)
+  : QDialog (parent)
 {
   mp_ui = new Ui::D25View ();
   mp_ui->setupUi (this);

src/plugins/tools/view_25d/lay_plugin/layD25ViewWidget.cc

@@ -27,12 +27,12 @@ namespace lay
 {
 
 D25ViewWidget::D25ViewWidget (QWidget *parent)
-  : QOpenGLWidget (parent), mp_view (0)
+  : QOpenGLWidget (parent)
 {
   // @@@
 }
 
-D25View::~D25View ()
+D25ViewWidget::~D25ViewWidget ()
 {
   // @@@
 }