e1d: fix ASSERT during "write terminal"

There was some wrong ordering in config_write_e1d() regarding
resolving the vpair 'peer' devices.  We can only call
e1d_vpair_intf_peer() _after_  we have established that the
given interface actually is of type VPAIR.

Assert failed intf->drv == E1_DRIVER_VPAIR vpair.c:96

Change-Id: If494d77ed1df5cda655d3b4a60868154dc2b355e

1 files changed, 5 insertions, 1 deletions

diff --git a/src/vty.c b/src/vty.c
index 0d8ab2b..563950d 100644
--- a/src/vty.c
+++ b/src/vty.c
@@ -185,12 +185,16 @@ static int config_write_e1d(struct vty *vty)
 
 	/* find all vpair interfaces */
 	llist_for_each_entry(intf, &vty_e1d->interfaces, list) {
-		struct e1_intf *peer = e1d_vpair_intf_peer(intf);
+		struct e1_intf *peer;
 		unsigned int line_count = 0;
 		struct e1_line *line;
 
 		if (intf->drv != E1_DRIVER_VPAIR)
 			continue;
+
+		peer = e1d_vpair_intf_peer(intf);
+		OSMO_ASSERT(peer);
+
 		/* skip the 'mirror' interfaces */
 		if (intf->id > peer->id)
 			continue;