BUG: Initialize m_Spacing in RunLengthTextureFeatures

To address the valgrind error:

  1 ==19980== Conditional jump or move depends on uninitialised value(s)
  2 ==19980==    at 0x5D466C8: __printf_fp_l (printf_fp.c:381)
  3 ==19980==    by 0x5D450B8: vfprintf (vfprintf.c:1631)
  4 ==19980==    by 0x5D6CA48: vsnprintf (vsnprintf.c:114)
  5 ==19980==    by 0x5832F5B: ??? (in /usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.21)
  6 ==19980==    by 0x5861A56: std::ostreambuf_iterator<char, std::char_traits<char> > std::num_put<char, std::ostreambuf_    iterator<char, std::char_traits<char> > >::_M_insert_float<double>(std::ostreambuf_iterator<char, std::char_traits<cha    r> >, std::ios_base&, char, char, double) const (in /usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.21)
  7 ==19980==    by 0x5861D6F: std::num_put<char, std::ostreambuf_iterator<char, std::char_traits<char> > >::do_put(std::o    streambuf_iterator<char, std::char_traits<char> >, std::ios_base&, char, double) const (in /usr/lib/x86_64-linux-gnu/l    ibstdc++.so.6.0.21)
  8 ==19980==    by 0x586DFC4: std::ostream& std::ostream::_M_insert<double>(double) (in /usr/lib/x86_64-linux-gnu/libstdc    ++.so.6.0.21)
  9 ==19980==    by 0x50D4F9: operator<< (ostream:221)
 10 ==19980==    by 0x50D4F9: std::ostream& itk::operator<< <double, 3u>(std::ostream&, itk::Point<double, 3u> const&) (it    kPoint.hxx:312)
 11 ==19980==    by 0x50DC86: itk::Statistics::RunLengthTextureFeaturesImageFilter<itk::Image<int, 3u>, itk::Image<itk::Ve    ctor<float, 10u>, 3u> >::PrintSelf(std::ostream&, itk::Indent) const (itkRunLengthTextureFeaturesImageFilter.hxx:530)
 12 ==19980==    by 0x4EEB8F1: itk::LightObject::Print(std::ostream&, itk::Indent) const (in /home/matt/bin/ITK3-GCC-RelWi    thDebInfo/lib/libITKCommon-4.13.so.1)
 13 ==19980==    by 0x501042: RunLengthTextureFeaturesImageFilterInstantiationTest(int, char**) (RunLengthTextureFeaturesI    mageFilterInstantiationTest.cxx:66)
 14 ==19980==    by 0x47E0B3: main (TextureFeaturesTestDriver.cxx:191)
 15 =

Author: thewtex

include/itkRunLengthTextureFeaturesImageFilter.hxx

@@ -34,7 +34,9 @@ RunLengthTextureFeaturesImageFilter< TInputImage, TOutputImage >
     m_Max( NumericTraits<PixelType>::max() ),
     m_MinDistance( NumericTraits<RealType>::ZeroValue() ),
     m_MaxDistance( NumericTraits<RealType>::max() ),
-    m_InsidePixelValue( NumericTraits<PixelType>::OneValue() ){
+    m_InsidePixelValue( NumericTraits<PixelType>::OneValue() ),
+    m_Spacing( 1.0 )
+{
   this->SetNumberOfRequiredInputs( 1 );
   this->SetNumberOfRequiredOutputs( 1 );