COMP: Fix -Wshadow warnings on local samplenr variable

Fixed GCC/ubuntu "warning: declaration of 'samplenr' shadows a previous local [-Wshadow]", by moving one local `samplenr` variable beyond the other.

Author: N-Dekker

Common/itkComputeJacobianTerms.hxx

@@ -71,8 +71,6 @@ ComputeJacobianTerms<TFixedImage, TTransform>::Compute(double & TrC, double & Tr
   /** Get scales vector */
   const ScalesType & scales = this->m_Scales;
 
-  unsigned int samplenr = 0;
-
   /** Variables for nonzerojacobian indices and the Jacobian. */
   const NumberOfParametersType sizejacind = this->m_Transform->GetNumberOfNonZeroJacobianIndices();
   JacobianType                 jacj(outdim, sizejacind);
@@ -225,6 +223,8 @@ ComputeJacobianTerms<TFixedImage, TTransform>::Compute(double & TrC, double & Tr
   /** Initialize band matrix. */
   CovarianceMatrixType bandcov(numberOfParameters, bandcovsize, 0.0);
 
+  unsigned int samplenr = 0;
+
   /**
    *    TERM 1
    *