Fix FTD2XX build for CygWin.

git-svn-id: svn://svn.berlios.de/openocd/trunk@2454 b42882b7-edfa-0310-969c-e2dbd0fdcd60

src/jtag/ft2232.c

@@ -1885,7 +1885,7 @@ static int ft2232_init_ftd2xx(uint16_t vid, uint16_t pid, int more, int* try_mor
 			{
 				LOG_ERROR("ListDevices: %lu\n", num_devices);
 				for (i = 0; i < num_devices; i++)
-					LOG_ERROR("%i: \"%s\"", i, desc_array[i]);
+					LOG_ERROR("%" PRIu32 ": \"%s\"", i, desc_array[i]);
 			}
 
 			for (i = 0; i < num_devices; i++)