minor cosmetic cleanup, use macro instead of explicit check

git-svn-id: https://svn.gnumonks.org/trunk/librfid@1833 e0336214-984f-0b4b-a45f-81c69e1f0ede

diff --git a/src/rfid_proto_tcl.c b/src/rfid_proto_tcl.c
index ae47f87..e6735a8 100644 (file)
--- a/src/rfid_proto_tcl.c
+++ b/src/rfid_proto_tcl.c
@@ -345,9 +345,8 @@ tcl_build_prologue2(struct tcl_handle *th,
                prlg[*prlg_len] = th->cid & 0x0f;
        }
 
-       /* nad only for I-block (0xc0 == 00) */
-       if ((th->flags & TCL_HANDLE_F_NAD_USED) &&
-           ((pcb & 0xc0) == 0x00)) {
+       /* nad only for I-block */
+       if ((th->flags & TCL_HANDLE_F_NAD_USED) && is_i_block(pcb)) {
                /* ISO 14443-4:2000(E) Section 7.1.1.3 */
                /* FIXME: in case of chaining only for first frame */
                *prlg |= TCL_PCB_NAD_FOLLOWING;