STYLE: Replace Fill(static_cast<RealType>(0.0)) with {} in test

Follow-up to pull request InsightSoftwareConsortium#4881
commit 569a8b6
"STYLE: Replace Fill(0) with {} initializer for local variables in tests"

Modules/Registration/Metricsv4/test/itkEuclideanDistancePointSetMetricRegistrationTest.cxx

@@ -258,15 +258,13 @@ itkEuclideanDistancePointSetMetricRegistrationTest(int argc, char * argv[])
   FieldType::SpacingType spacing;
   spacing.Fill(static_cast<RealType>(1.0));
 
-  FieldType::DirectionType direction;
-  direction.Fill(static_cast<RealType>(0.0));
+  FieldType::DirectionType direction{};
   for (unsigned int d = 0; d < Dimension; ++d)
   {
     direction[d][d] = static_cast<RealType>(1.0);
   }
 
-  FieldType::PointType origin;
-  origin.Fill(static_cast<RealType>(0.0));
+  FieldType::PointType origin{};
 
   auto regionSize = RegionType::SizeType::Filled(static_cast<itk::SizeValueType>(pointMax) + 1);
 
@@ -280,8 +278,7 @@ itkEuclideanDistancePointSetMetricRegistrationTest(int argc, char * argv[])
   displacementField->SetSpacing(spacing);
   displacementField->SetRegions(region);
   displacementField->Allocate();
-  DisplacementFieldTransformType::OutputVectorType zeroVector;
-  zeroVector.Fill(static_cast<RealType>(0.0));
+  DisplacementFieldTransformType::OutputVectorType zeroVector{};
   displacementField->FillBuffer(zeroVector);
   displacementTransform->SetDisplacementField(displacementField);