* fix warnings in /paddle * fix bmp_reader.c * add -Wsign-compare * fix code style * fix sum.cpp * remove paddle sign-compare * fix return in input_model.cpp * fix bmp_reader.c
* fix warnings in /paddle * fix bmp_reader.c * add -Wsign-compare * fix code style * fix sum.cpp * remove paddle sign-compare * fix return in input_model.cpp * fix bmp_reader.c