Fixed warnings in Tests.

Tests/GeoLib/TestDuplicateGeometry.cpp

Tests/MaterialLib/TestFractureModels.cpp

...alLib/TestMPLCapillaryPressureRegularizedVanGenuchten.cpp

...alLib/TestMPLRelPermNonWettingPhaseVanGenuchtenMualem.cpp

Tests/MaterialLib/TestMPLRelPermUdell.cpp

Tests/MeshLib/TestPyramidQualityCriteria.cpp

Tests/MeshLib/TestTetQualityCriteria.cpp

Tests/NumLib/NewtonRaphson.cpp