(main): Add UCHAR casts.

diff --git a/src/sort.c b/src/sort.c
index 23dc11bbc886d8bd3f839381c8d930b985effe56..b469e476ac0befb9c91d44f1cbbb886d9536fe3a 100644 (file)
--- a/src/sort.c
+++ b/src/sort.c
@@ -1541,7 +1541,7 @@ main (argc, argv)
          key->skipsblanks = key->skipeblanks = 0;
          key->numeric = key->month = key->reverse = 0;
          s = argv[i] + 1;
-         if (! (digits[UCHAR (*s)] || (*s == '.' && digits[s[1]])))
+         if (! (digits[UCHAR (*s)] || (*s == '.' && digits[UCHAR (s[1])])))
            badfieldspec (argv[i]);
          for (t = 0; digits[UCHAR (*s)]; ++s)
            t = 10 * t + *s - '0';
@@ -1563,7 +1563,7 @@ main (argc, argv)
       else if (argv[i][0] == '-' && argv[i][1])
        {
          s = argv[i] + 1;
-         if (digits[UCHAR (*s)] || (*s == '.' && digits[s[1]]))
+         if (digits[UCHAR (*s)] || (*s == '.' && digits[UCHAR (s[1])]))
            {
              if (!key)
                usage (2);