Merge branch 'charts-valgrind-rel' into release

Change-Id: I319ca955a8a6fe011c9b167ff9cf76895f82fb14

Charts/vtkChartMatrix.cxx

@@ -28,7 +28,7 @@
 class vtkChartMatrix::PIMPL
 {
 public:
-  PIMPL() {}
+  PIMPL() : Geometry(0, 0) {}
   ~PIMPL() {}
 
   // Container for the vtkChart objects that make up the matrix.
@@ -40,7 +40,7 @@ public:
 
 vtkStandardNewMacro(vtkChartMatrix)
 
-vtkChartMatrix::vtkChartMatrix() : Gutter(15.0, 15.0)
+vtkChartMatrix::vtkChartMatrix() : Size(0, 0), Gutter(15.0, 15.0)
 {
   this->Private = new PIMPL;
   this->Borders[vtkAxis::LEFT] = 50;

Charts/vtkTooltipItem.cxx

@@ -32,7 +32,7 @@
 vtkStandardNewMacro(vtkTooltipItem);
 
 //-----------------------------------------------------------------------------
-vtkTooltipItem::vtkTooltipItem()
+vtkTooltipItem::vtkTooltipItem() : PositionVector(0, 0)
 {
   this->Position = this->PositionVector.GetData();
   this->TextProperties = vtkTextProperty::New();