vtkPLY: handle realloc errors properly
vtkPLY: handle realloc errors properly

Change-Id: Ie2cf9e3d5848a22120899a3f867b45808f0f2e78

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