[GRASS-git] [OSGeo/grass] c2e3c0: Add missing #include <stdlib.h> to display/d.where...

[Attila Oláh]

  Branch: refs/heads/releasebranch_7_8
  Home:   https://github.com/OSGeo/grass
  Commit: c2e3c0040d7bef4e2072522a6d9de18347b3f0d6
      https://github.com/OSGeo/grass/commit/c2e3c0040d7bef4e2072522a6d9de18347b3f0d6
  Author: Attila Oláh <atl at google.com>
  Date:   2021-03-01 (Mon, 01 Mar 2021)

  Changed paths:
    M display/d.where/main.c

  Log Message:
  -----------
  Add missing #include <stdlib.h> to display/d.where/main.c. (#1377)

It is requiref for `exit()` and `EXIT_SUCCESS`/`EXIT_FAILURE`.