fix warning problem

Makefile

software/buffer.cpp

src/wino.cpp

src/wino.h

src/wino_IO.cpp

src/wino_buffer.cpp

src/wino_cell.cpp

src/wino_macro.h

src_gold/wino_cell_gold.hpp

src_gold/wino_gold.cpp

src_gold/wino_gold.h

testbench/main.cpp