expr: use __attribute__((constructor)) to register expression

Instead of manual array registration.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

1 files changed, 2 insertions, 0 deletions

diff --git a/src/internal.h b/src/internal.h
index 803dcc4..773643b 100644
--- a/src/internal.h
+++ b/src/internal.h
@@ -78,4 +78,6 @@ struct nft_set_elem {
 
 #define div_round_up(n, d)	(((n) + (d) - 1) / (d))
 
+#define __init __attribute__((constructor))
+
 #endif