build: add trace.h to Makefile

so `make distcheck` works fine.

Fixes: 8e03d59b5aa4 ("src: split monitor trace code into new trace.c")
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

diff --git a/Makefile.am b/Makefile.am
index ba09e7f0953d58d3e3e07dd2096519987bb6d2e6..b5580b5451fca76d9b633c19aab9da3cf4cd9c69 100644 (file)
--- a/Makefile.am
+++ b/Makefile.am
@@ -99,6 +99,7 @@ noinst_HEADERS = \
        include/socket.h \
        include/statement.h \
        include/tcpopt.h \
+       include/trace.h \
        include/utils.h \
        include/xfrm.h \
        include/xt.h \