Snippets for argp-standalone 1.5.0 from Nix aarch64-darwin

Sourced from https://hydra.nixos.org/log/r2gws7cysc4gj6ff9y2j03ncif00phsg-argp-standalone-1.5.0.drv.

• ../argp-help.c:90:12: warning: returning 'const char *' from a function with result type 'char *' discards qualifiers [-Wincompatible-pointer-types-discards-qualifiers]
     90 |     return m ? dgettext(d, m) : NULL;
        |            ^~~~~~~~~~~~~~~~~~~~~~~~~
  

• ../argp-help.c:1724:2: warning: No reasonable value to return [-W#warnings]
   1724 | #warning No reasonable value to return
        |  ^
  

• ../argp-help.c:1870:22: warning: unused variable 'buf' [-Wunused-variable]
   1870 |                 char buf[200];
        |                      ^~~