Fixed warning about possible null deref
Fixed warning about possible null deref

Presumably ‘producer’ can never be null because
it’s unconditionally dereferenced a few lines below
this change.

Change-Id: I85c425ae1eaa17cf56118b90472412bec1c705c9

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