msgb talloc ctx: initialize in all main() scopes

Add msgb_talloc_ctx_init() call to many main() functions still lacking a
msgb talloc context.

Change-Id: Ib0d6751260659cabf18a7ce80680ba2fb4228ea1
diff --git a/openbsc/src/utils/bs11_config.c b/openbsc/src/utils/bs11_config.c
index 3420991..7356b82 100644
--- a/openbsc/src/utils/bs11_config.c
+++ b/openbsc/src/utils/bs11_config.c
@@ -891,6 +891,7 @@
 	struct e1inp_line *line;
 
 	tall_bs11cfg_ctx = talloc_named_const(NULL, 0, "bs11-config");
+	msgb_talloc_ctx_init(tall_bs11cfg_ctx, 0);
 
 	osmo_init_logging(&log_info);
 	handle_options(argc, argv);