bsc_api: Clear the conn of the failed lchan to avoid a runtime warning
diff --git a/openbsc/src/bsc_api.c b/openbsc/src/bsc_api.c
index 9ab49f4..ae93706 100644
--- a/openbsc/src/bsc_api.c
+++ b/openbsc/src/bsc_api.c
@@ -446,6 +446,8 @@
 		conn->lchan = NULL;
 	if (conn->ho_lchan == lchan)
 		conn->ho_lchan = NULL;
+	lchan->conn = NULL;
+
 	gsm0808_clear(conn);
 
 	if (destruct)