Add check for empty table to vtkScatterPlotMatrix::SetInput()
Add check for empty table to vtkScatterPlotMatrix::SetInput()

This adds a check to see if the input table is empty and
if so does not set it as the input.

Change-Id: I4f7d870e7f2b099bacac4f43bc762c2ccbb70348

msmolens/VTK,jmerkow/VTK,spthaolt/VTK,ashray/VTK-EVM,candy7393/VTK,sumedhasingla/VTK,msmolens/VTK,mspark93/VTK,berendkleinhaneveld/VTK,mspark93/VTK,demarle/VTK,SimVascular/VTK,collects/VTK,cjh1/VTK,jmerkow/VTK,spthaolt/VTK,SimVascular/VTK,sankhesh/VTK,aashish24/VTK-old,demarle/VTK,jmerkow/VTK,jmerkow/VTK,mspark93/VTK,sumedhasingla/VTK,collects/VTK,hendradarwin/VTK,mspark93/VTK,sankhesh/VTK,candy7393/VTK,berendkleinhaneveld/VTK,sankhesh/VTK,SimVascular/VTK,gram526/VTK,gram526/VTK,hendradarwin/VTK,gram526/VTK,hendradarwin/VTK,candy7393/VTK,biddisco/VTK,cjh1/VTK,SimVascular/VTK,demarle/VTK,ashray/VTK-EVM,collects/VTK,candy7393/VTK,berendkleinhaneveld/VTK,sankhesh/VTK,keithroe/vtkoptix,spthaolt/VTK,biddisco/VTK,johnkit/vtk-dev,keithroe/vtkoptix,sankhesh/VTK,berendkleinhaneveld/VTK,jmerkow/VTK,johnkit/vtk-dev,collects/VTK,berendkleinhaneveld/VTK,sankhesh/VTK,cjh1/VTK,ashray/VTK-EVM,mspark93/VTK,johnkit/vtk-dev,keithroe/vtkoptix,SimVascular/VTK,aashish24/VTK-old,collects/VTK,candy7393/VTK,ashray/VTK-EVM,keithroe/vtkoptix,jmerkow/VTK,hendradarwin/VTK,SimVascular/VTK,cjh1/VTK,ashray/VTK-EVM,SimVascular/VTK,msmolens/VTK,demarle/VTK,johnkit/vtk-dev,biddisco/VTK,msmolens/VTK,demarle/VTK,SimVascular/VTK,hendradarwin/VTK,aashish24/VTK-old,berendkleinhaneveld/VTK,cjh1/VTK,sankhesh/VTK,hendradarwin/VTK,sankhesh/VTK,aashish24/VTK-old,berendkleinhaneveld/VTK,candy7393/VTK,sumedhasingla/VTK,demarle/VTK,msmolens/VTK,biddisco/VTK,sumedhasingla/VTK,mspark93/VTK,collects/VTK,msmolens/VTK,aashish24/VTK-old,keithroe/vtkoptix,gram526/VTK,ashray/VTK-EVM,gram526/VTK,jmerkow/VTK,candy7393/VTK,ashray/VTK-EVM,sumedhasingla/VTK,johnkit/vtk-dev,spthaolt/VTK,msmolens/VTK,jmerkow/VTK,sumedhasingla/VTK,mspark93/VTK,spthaolt/VTK,biddisco/VTK,cjh1/VTK,msmolens/VTK,candy7393/VTK,sumedhasingla/VTK,mspark93/VTK,spthaolt/VTK,keithroe/vtkoptix,johnkit/vtk-dev,keithroe/vtkoptix,biddisco/VTK,aashish24/VTK-old,demarle/VTK,spthaolt/VTK,gram526/VTK,biddisco/VTK,demarle/VTK,keithroe/vtkoptix,gram526/VTK,hendradarwin/VTK,sumedhasingla/VTK,johnkit/vtk-dev,gram526/VTK,ashray/VTK-EVM