[Dcmlib] Warnings sur vtkGdcmWriter

[Mathieu Malaterre]

Building object file TestCopyRescaleDicom.o...
/home/malaterre/Creatis/malaterre/gdcm/Test/TestCopyRescaleDicom.cxx: In
    function `int CopyRescaleDicom(const std::string&, const std::string&)':
/home/malaterre/Creatis/malaterre/gdcm/Test/TestCopyRescaleDicom.cxx:94: 
warning: unused
    variable `uint8_t*imageData'
Building object file ShowDicom.o...
Building object file TestWriteWithVTK.o...
In file included from 
/home/malaterre/Creatis/malaterre/gdcm/Test/TestWriteWithVTK.cxx:20:
/home/malaterre/Kitware/VTK/IO/vtkImageWriter.h:88: warning: `virtual void
    vtkImageWriter::RecursiveWrite(int, vtkImageData*, vtkImageData*,
    std::ofstream*)' was hidden
/home/malaterre/Creatis/malaterre/gdcm/vtk/vtkGdcmWriter.h:29: warning: 
   by `
    virtual void vtkGdcmWriter::RecursiveWrite(int, vtkImageData*,
    std::ofstream*)'
Building executable 
/home/malaterre/Creatis/malaterre/gdcmbin/bin/gdcmTests...
/home/malaterre/Creatis/malaterre/gdcmbin/vtk: building default_target
Building dependencies dependlocal...
-- Loading VTK CMake commands
-- Loading VTK CMake commands - done
Building object file GdcmToBaseline.o...
Building executable 
/home/malaterre/Creatis/malaterre/gdcmbin/bin/GdcmToBaseline..