Fix cppcheck warnings

src/Info.cc

src/MapReduce.cc

src/afterburnerlib.cc

src/cdo.cc

src/cdo_varlist.cc

src/grid_read.cc

src/mpim_grid/grid_rot.cc

src/mpim_grid/mpim_grid.cc

src/mpim_grid/mpim_grid.h

src/parser.cc

src/parser.h

src/remap_bilinear.cc

src/sellist.cc