[GRASS-git] [OSGeo/grass] 7780e9: fix -Wunused-but-set-variable warnings (#2752)

[Nicklas Larsson]

  Branch: refs/heads/main
  Home:   https://github.com/OSGeo/grass
  Commit: 7780e949480704b21a9bfa9e9c60308ecc6fc3f9
      https://github.com/OSGeo/grass/commit/7780e949480704b21a9bfa9e9c60308ecc6fc3f9
  Author: Nicklas Larsson <n_larsson at yahoo.com>
  Date:   2023-01-17 (Tue, 17 Jan 2023)

  Changed paths:
    M display/d.grid/plot.c
    M include/grass/iostream/ami_sort_impl.h
    M lib/gis/parser_wps.c
    M lib/gis/spawn.c
    M lib/gmath/blas_level_1.c
    M lib/lidar/zones.c
    M lib/ogsf/gsd_fringe.c
    M lib/ogsf/gsd_surf.c
    M lib/proj/datum.c
    M lib/proj/ellipse.c
    M lib/vector/Vlib/break_polygons.c
    M lib/vector/Vlib/build.c
    M lib/vector/Vlib/snap.c
    M lib/vector/vedit/vertex.c
    M ps/ps.map/do_geogrid.c
    M ps/ps.map/do_grid.c
    M raster/r.clump/minsize.c
    M raster/r.li/r.li.padrange/padrange.c
    M raster/r.li/r.li.patchnum/main.c
    M raster/r.mapcalc/map.c
    M raster/r.quant/read_rules.c
    M raster/r.recode/read_rules.c
    M raster/r.resamp.bspline/resamp.c
    M raster/r.sim/simlib/hydro.c
    M raster/r.topidx/topidx.c
    M vector/v.generalize/displacement.c
    M vector/v.label.sa/annealing.c
    M vector/v.lidar.growing/growing.c
    M vector/v.lidar.growing/main.c
    M vector/v.net.steiner/main.c
    M vector/v.out.vtk/writeVTK.c
    M vector/v.overlay/line_area.c
    M vector/v.surf.bspline/resamp.c
    M vector/v.voronoi/sw_main.c

  Log Message:
  -----------
  fix -Wunused-but-set-variable warnings (#2752)