libnl-tiny: fix potential redefinition of offsetof

SVN-Revision: 16030

package/libnl-tiny/src/include/netlink-local.h

@@ -109,7 +109,9 @@ static inline int nl_cb_call(struct nl_cb *cb, int type, struct nl_msg *msg)
 }
 
 #define ARRAY_SIZE(X) (sizeof(X) / sizeof((X)[0]))
+#ifndef offsetof
 #define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)
+#endif
 
 #define __init __attribute__ ((constructor))
 #define __exit __attribute__ ((destructor))