[GRASS-git] [OSGeo/grass] 9e5ce9: fix -Wgnu-pointer-arith compiler warnings (#2875)

[Nicklas Larsson]

  Branch: refs/heads/main
  Home:   https://github.com/OSGeo/grass
  Commit: 9e5ce9191d6092d349a049c1c0210ec25ba7dda5
      https://github.com/OSGeo/grass/commit/9e5ce9191d6092d349a049c1c0210ec25ba7dda5
  Author: Nicklas Larsson <n_larsson at yahoo.com>
  Date:   2023-03-18 (Sat, 18 Mar 2023)

  Changed paths:
    M lib/raster3d/mask.c
    M raster/r.fill.stats/main.c
    M raster/r.in.xyz/main.c

  Log Message:
  -----------
  fix  -Wgnu-pointer-arith compiler warnings (#2875)