[media] dib9000: fix potential format string leak

Make sure that a format string cannot accidentally
leak into the printk buffer.

Signed-off-by: Kees Cook <[e-mail]>
Signed-off-by: Michael Krufky <[e-mail]>
Signed-off-by: Mauro Carvalho Chehab <[e-mail]>

drivers/media/dvb-frontends/dib9000.c

···
 	b[2 * (size - 2) - 1] = '\0';	/* Bullet proof the buffer */
 	if (*b == '~') {
 		b++;
-		dprintk(b);
+		dprintk("%s", b);
 	} else
 		dprintk("RISC%d: %d.%04d %s", state->fe_id, ts / 10000, ts % 10000, *b ? b : "<emtpy>");
 	return 1;