BUG #13821. Fixed vtkRenderingFreeTypeObjectFactory leaks.
BUG #13821. Fixed vtkRenderingFreeTypeObjectFactory leaks.

In certain cases, vtkRenderingFreeTypeObjectFactory leaked when application
would quit (only in release builds with gcc).The problem was that while
vtkRenderingFreeType_AutoInit_Construct() would get called almost 11/12 times,
vtkRenderingFreeType_AutoInit_Destruct() was only getting called once. Which
resulted in vtkRenderingFreeTypeObjectFactory not being unregistered and hence
leaked.

Now the extra reference maintained to vtkRenderingFreeTypeObjectFactory instance
itself is unnecessary, since vtkObjectFactory::RegisterFactor() maintains a
reference and cleans the reference up when exiting. Cleaning this extra
reference overcomes the issue altogether.

Change-Id: I878a1c364ac3f1fd729ff06aa9eb3f4191e8660b

johnkit/vtk-dev,johnkit/vtk-dev,sankhesh/VTK,jmerkow/VTK,sankhesh/VTK,msmolens/VTK,sumedhasingla/VTK,sumedhasingla/VTK,biddisco/VTK,gram526/VTK,mspark93/VTK,mspark93/VTK,jmerkow/VTK,sumedhasingla/VTK,msmolens/VTK,gram526/VTK,jmerkow/VTK,SimVascular/VTK,candy7393/VTK,demarle/VTK,jmerkow/VTK,collects/VTK,gram526/VTK,jmerkow/VTK,demarle/VTK,candy7393/VTK,berendkleinhaneveld/VTK,biddisco/VTK,sumedhasingla/VTK,collects/VTK,sankhesh/VTK,candy7393/VTK,biddisco/VTK,mspark93/VTK,keithroe/vtkoptix,johnkit/vtk-dev,ashray/VTK-EVM,msmolens/VTK,keithroe/vtkoptix,collects/VTK,sumedhasingla/VTK,keithroe/vtkoptix,keithroe/vtkoptix,mspark93/VTK,sumedhasingla/VTK,hendradarwin/VTK,keithroe/vtkoptix,jmerkow/VTK,ashray/VTK-EVM,candy7393/VTK,sankhesh/VTK,mspark93/VTK,gram526/VTK,berendkleinhaneveld/VTK,johnkit/vtk-dev,candy7393/VTK,demarle/VTK,biddisco/VTK,sumedhasingla/VTK,berendkleinhaneveld/VTK,ashray/VTK-EVM,msmolens/VTK,demarle/VTK,candy7393/VTK,jmerkow/VTK,keithroe/vtkoptix,keithroe/vtkoptix,collects/VTK,biddisco/VTK,sankhesh/VTK,demarle/VTK,demarle/VTK,sumedhasingla/VTK,SimVascular/VTK,hendradarwin/VTK,demarle/VTK,ashray/VTK-EVM,ashray/VTK-EVM,SimVascular/VTK,ashray/VTK-EVM,collects/VTK,berendkleinhaneveld/VTK,demarle/VTK,biddisco/VTK,SimVascular/VTK,sankhesh/VTK,johnkit/vtk-dev,jmerkow/VTK,ashray/VTK-EVM,ashray/VTK-EVM,biddisco/VTK,johnkit/vtk-dev,berendkleinhaneveld/VTK,collects/VTK,hendradarwin/VTK,keithroe/vtkoptix,msmolens/VTK,gram526/VTK,hendradarwin/VTK,hendradarwin/VTK,msmolens/VTK,johnkit/vtk-dev,gram526/VTK,gram526/VTK,mspark93/VTK,hendradarwin/VTK,berendkleinhaneveld/VTK,sankhesh/VTK,mspark93/VTK,msmolens/VTK,mspark93/VTK,candy7393/VTK,SimVascular/VTK,candy7393/VTK,SimVascular/VTK,hendradarwin/VTK,SimVascular/VTK,msmolens/VTK,sankhesh/VTK,SimVascular/VTK,gram526/VTK,berendkleinhaneveld/VTK