fix build failure for Qt4

src/Mod/Sketcher/Gui/TaskSketcherGeneral.cpp

@@ -45,6 +45,9 @@ SketcherGeneralWidget::SketcherGeneralWidget(QWidget *parent)
   : QWidget(parent), ui(new Ui_TaskSketcherGeneral)
 {
     ui->setupUi(this);
+#if QT_VERSION >= 0x050200
+    ui->renderingOrder->setSizeAdjustPolicy(QAbstractScrollArea::AdjustToContents);
+#endif
 
     // connecting the needed signals
     connect(ui->checkBoxShowGrid, SIGNAL(toggled(bool)),

src/Mod/Sketcher/Gui/TaskSketcherGeneral.ui

@@ -136,9 +136,6 @@ Points must be set closer than a fifth of the grid size to a grid line to snap.<
      <property name="toolTip">
       <string>To change, drag and drop a geometry type to top or bottom</string>
      </property>
-     <property name="sizeAdjustPolicy">
-      <enum>QAbstractScrollArea::AdjustToContents</enum>
-     </property>
      <property name="dragEnabled">
       <bool>true</bool>
      </property>