Snippets for altermime 0.3.11 from Nix aarch64-darwin

Sourced from https://hydra.nixos.org/log/wb2rcnr7d57r78r7hsc59i1vdlvqrm1r-altermime-0.3.11.drv.

• mime_alter.c:1546:54: warning: '__builtin_snprintf' output may be truncated before the last format character [-Wformat-truncation=]
   1546 |                 snprintf(boundary, sizeof(boundary), "--%s", dd->boundary);
        |                                                      ^~~~~~
  

• pldstr.c:300:37: warning: comparison between pointer and zero character constant [-Wpointer-compare]
    300 |         if ((st->start)&&(st->start != '\0'))
        |                                     ^~
  

• MIME_headers.c:788:61: warning: '/doubleCR.' directive output may be truncated writing 10 bytes into a region of size between 0 and 1023 [-Wformat-truncation=]
    788 |                 snprintf(glb.doubleCRname,_MIMEH_STRLEN_MAX,"%s/doubleCR.%d",glb.output_dir,glb.doubleCR_count);
        |                                                             ^~~~~~~~~~~~~~~~
  

• MIME_headers.c:2015:92: warning: '%s' directive output may be truncated writing up to 1023 bytes into a region of size 129 [-Wformat-truncation=]
   2015 |                                         snprintf(hinfo->filename, sizeof(hinfo->filename), "%s.applemeta", glb.appledouble_filename );
        |                                                                                            ^~~~~~~~~~~~~~  ~~~~~~~~~~~~~~~~~~~~~~~~
  

• MIME_headers.c:2502:85: warning: '%s' directive output may be truncated writing up to 1023 bytes into a region of size 129 [-Wformat-truncation=]
   2502 |                                 snprintf( hinfo->filename, sizeof(hinfo->filename), "%s", hinfo->name );
        |                                                                                     ^~~~
  

• MIME_headers.c:2925:45: warning: '%s' directive output may be truncated writing up to 128 bytes into a region of size 124 [-Wformat-truncation=]
   2925 |                 snprintf( tmp, sizeof(tmp), "mac-%s", hinfo->filename );
        |                                             ^~~~~~~~
  

• qpe.c:94:64: warning: format '%d' expects argument of type 'int', but argument 5 has type 'size_t' {aka 'long unsigned int'} [-Wformat=]
     94 |         fprintf(stderr,"%s:%d:DEBUG: Line terminator length = %d", FL, strlen(line_terminator));
        |                                                               ~^       ~~~~~~~~~~~~~~~~~~~~~~~
        |                                                                |       |
        |                                                                int     size_t {aka long unsigned int}
        |                                                               %ld
  

• qpe.c:109:29: warning: comparison between pointer and zero character constant [-Wpointer-compare]
    109 |                 if (lineend != '\0') {
        |                             ^~
  

• altermime.c:378:50: warning: '%ld' directive output may be truncated writing between 1 and 20 bytes into a region of size between 0 and 1023 [-Wformat-truncation=]
    378 |                 snprintf(scratch,sizeof(scratch),"%s/%ld%d.amtmp", glb.tmpdir, time(NULL), getpid());
        |                                                  ^~~~~~~~~~~~~~~~