Fixed ITK 4.2 backward compatibility issue
Fixed ITK 4.2 backward compatibility issue

ldqcarbon/RTK,SimonRit/RTK,ldqcarbon/RTK,ldqcarbon/RTK,ldqcarbon/RTK,ldqcarbon/RTK,SimonRit/RTK,SimonRit/RTK,fabienmomey/RTK,ldqcarbon/RTK,fabienmomey/RTK,ldqcarbon/RTK,fabienmomey/RTK,fabienmomey/RTK,SimonRit/RTK,fabienmomey/RTK,fabienmomey/RTK,fabienmomey/RTK