[GRASS-git] [OSGeo/grass-addons] 4c52a5: r.vol.dem: fix Boolean types (#531)

[Markus Neteler]

  Branch: refs/heads/master
  Home:   https://github.com/OSGeo/grass-addons
  Commit: 4c52a53bdd9d253d13a4b91fb8748e15e1c3a522
      https://github.com/OSGeo/grass-addons/commit/4c52a53bdd9d253d13a4b91fb8748e15e1c3a522
  Author: Markus Neteler <neteler at gmail.com>
  Date:   2021-05-25 (Tue, 25 May 2021)

  Changed paths:
    M grass7/raster/r.vol.dem/chull.c

  Log Message:
  -----------
  r.vol.dem: fix Boolean types (#531)

* r.vol.dem: fix Boolean types

Backport of v.hull related changes (https://github.com/OSGeo/grass/pull/1567)

* Define Boolean type for pre-7.8.6 compatibility

Co-authored-by: @nilason