syscalls/statx06.c: Fix compiler errors

struct statx and statx_timestamp are only defined in sys/stat.h when _GNU_SOURCE is defined, so statx06.c should define _GNU_SOURCE as m4 struct check does.

---
 testcases/kernel/syscalls/statx/statx06.c | 1 +
 1 file changed, 1 insertion(+)

index dbf34a8..5240224 100644
@@ -33,6 +33,7 @@
  *
  */
 
+#define _GNU_SOURCE
 #include <stdio.h>
 #include <sys/mount.h>
 #include <time.h>

1.8.3.1

Hi!
Pushed, thanks.

Cyril Hrubis
[email protected]