Don't use %zu

Eventually we'll need to make sure that a) libroken's stdint.h defines
the max integer types, b) the libroken *printf()s can handle all the
standard length and conversion specifiers.

lib/krb5/changepw.c

@@ -330,7 +330,7 @@ process_reply (krb5_context context,
 
     if (len < 6) {
 	str2data (result_string, "server %s sent to too short message "
-		  "(%zu bytes)", host, len);
+		  "(%llu bytes)", host, (unsigned long long)len);
 	*result_code = KRB5_KPASSWD_MALFORMED;
 	return 0;
     }