Release graphics resources properly.
Release graphics resources properly.

vtkScalarBarActor wasn't releasing graphics resources for internal texture. This
fixes the problem.

Change-Id: I5f01c7d8ad0f78c25b4ab8f21bc8b4e66ae91c5f

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