Fix variable names and spacing

source/Lib/CommonLib/CodingStructure.h

source/Lib/CommonLib/ContextModelling.cpp

source/Lib/CommonLib/ContextModelling.h

source/Lib/CommonLib/Hash.cpp

source/Lib/CommonLib/Hash.h

source/Lib/CommonLib/InterPrediction.cpp

source/Lib/CommonLib/NAL.h

source/Lib/CommonLib/Quant.cpp

source/Lib/CommonLib/Quant.h

source/Lib/CommonLib/RdCost.cpp

source/Lib/CommonLib/RdCost.h

source/Lib/CommonLib/Reshape.cpp

source/Lib/CommonLib/Reshape.h

source/Lib/CommonLib/Rom.cpp

source/Lib/CommonLib/Rom.h

source/Lib/CommonLib/SEI.h

source/Lib/CommonLib/Slice.cpp

source/Lib/CommonLib/Slice.h

source/Lib/CommonLib/UnitTools.cpp

source/Lib/DecoderLib/DecCu.cpp