[PATCH] usb_id: fix warning (undefined _GNU_SOURCE)

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  usb_id.c: In function ‘set_str’:
  usb_id.c:69  warning: implicit declaration of function ‘strnlen’

IMHO this patch is workaround. The correct way is to use "-include
$(top_builddir)/config.h" as a gcc option. I'll submit a patch with
this solution later.

Signed-off-by: Karel Zak <kzak@xxxxxxxxxx>
---
 extras/usb_id/usb_id.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/extras/usb_id/usb_id.c b/extras/usb_id/usb_id.c
index 5b78b97..53a952b 100644
--- a/extras/usb_id/usb_id.c
+++ b/extras/usb_id/usb_id.c
@@ -11,6 +11,8 @@
  *	Free Software Foundation version 2 of the License.
  */
 
+#include "../../config.h"
+
 #include <stdio.h>
 #include <stdlib.h>
 #include <stdarg.h>
-- 
1.5.5.1

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