better encapsulation of some types

lbaselib.c

@@ -1,5 +1,5 @@
 /*
-** $Id: lbaselib.c,v 1.23 2001/02/09 19:52:24 roberto Exp roberto $
+** $Id: lbaselib.c,v 1.24 2001/02/20 18:29:54 roberto Exp roberto $
 ** Basic library
 ** See Copyright Notice in lua.h
 */
@@ -100,7 +100,7 @@ static int luaB_tonumber (lua_State *L) {
     luaL_arg_check(L, 2 <= base && base <= 36, 2, "base out of range");
     n = strtoul(s1, &s2, base);
     if (s1 != s2) {  /* at least one valid digit? */
-      while (isspace((unsigned char)*s2)) s2++;  /* skip trailing spaces */
+      while (isspace(uchar(*s2))) s2++;  /* skip trailing spaces */
       if (*s2 == '\0') {  /* no invalid trailing characters? */
         lua_pushnumber(L, n);
         return 1;