ipaccess: Call line->ops->sign_link_down() only if set
This op must not necessarily be set by the user, so check if it is set
before calling it.
Change-Id: I666c5bbf157fe604e336df44f7eac098572d42ba
diff --git a/src/input/ipaccess.c b/src/input/ipaccess.c
index 94d2baf..42dd942 100644
--- a/src/input/ipaccess.c
+++ b/src/input/ipaccess.c
@@ -123,7 +123,8 @@
e1i_ts->pending_msg = NULL;
/* e1inp_sign_link_destroy releases the socket descriptors for us. */
- line->ops->sign_link_down(line);
+ if (line->ops->sign_link_down)
+ line->ops->sign_link_down(line);
e1inp_line_put2(line, __func__);
return ret;