Use ptrdiff_t for strides

source/Lib/CommonLib/AdaptiveLoopFilter.cpp

source/Lib/CommonLib/AffineGradientSearch.cpp

source/Lib/CommonLib/AffineGradientSearch.h

source/Lib/CommonLib/Buffer.cpp

source/Lib/CommonLib/Buffer.h

source/Lib/CommonLib/Common.h

source/Lib/CommonLib/DeblockingFilter.cpp

source/Lib/CommonLib/DeblockingFilter.h

source/Lib/CommonLib/Hash.cpp

source/Lib/CommonLib/Hash.h

source/Lib/CommonLib/IbcHashMap.cpp

source/Lib/CommonLib/IbcHashMap.h

source/Lib/CommonLib/InterPrediction.cpp

source/Lib/CommonLib/InterPrediction.h

source/Lib/CommonLib/InterpolationFilter.cpp

source/Lib/CommonLib/IntraPrediction.cpp

source/Lib/CommonLib/PicYuvMD5.cpp

source/Lib/CommonLib/Picture.cpp

source/Lib/CommonLib/QuantRDOQ.cpp

source/Lib/CommonLib/RdCost.cpp