[PTACH] libcacard: fix VCARD_ATTR_PREFIX macro

[Marcel Heinz <marcel.heinz@informatik.tu-chemnitz.de>]

Hi,

i just tried to compile lastest git HEAD and ran into the following
problem:

vcard_emul_nss.c:528:1: error: initializer element is not constant

The source code is:
static const unsigned char nss_atr[] = { VCARD_ATR_PREFIX(3), 'N', 'S', 'S' };

with

#define VCARD_ATR_PREFIX(size) (0x3b, 0x68+(size), 0x00, 0xff, \
                                'V', 'C', 'A', 'R', 'D', '_')

The parentheses in this macro result in the use of the comma operator
in the initialization and are clearly not correct. This is a regression
from commit 0082f4336e128a17d5f34e01de0fd29930e99b0d, which changed
0x66+(size) to 0x68+size and added the parenthesis.

So I propose the following patch:

diff --git a/libcacard/vcardt.h b/libcacard/vcardt.h
index d4d8e2e..d3e9522 100644
--- a/libcacard/vcardt.h
+++ b/libcacard/vcardt.h
@@ -26,8 +26,8 @@ typedef struct VCardEmulStruct VCardEmul;
 #define MAX_CHANNEL 4

 /* create an ATR with appropriate historical bytes */
-#define VCARD_ATR_PREFIX(size) (0x3b, 0x68+(size), 0x00, 0xff, \
-                               'V', 'C', 'A', 'R', 'D', '_')
+#define VCARD_ATR_PREFIX(size) 0x3b, 0x68+(size), 0x00, 0xff, \
+                               'V', 'C', 'A', 'R', 'D', '_'


 typedef enum {



Regards,
	Marcel