use osmo_init_logging2() with proper talloc ctx

Change-Id: I3e2a9aef5242efdf11a64536f79099a6e9cec53f
diff --git a/src/osmo-bsc_mgcp/mgcp_main.c b/src/osmo-bsc_mgcp/mgcp_main.c
index 91f9074..edb19a6 100644
--- a/src/osmo-bsc_mgcp/mgcp_main.c
+++ b/src/osmo-bsc_mgcp/mgcp_main.c
@@ -244,7 +244,7 @@
 	msgb_talloc_ctx_init(tall_bsc_ctx, 0);
 
 	osmo_init_ignore_signals();
-	osmo_init_logging(&log_info);
+	osmo_init_logging2(tall_bsc_ctx, &log_info);
 
 	cfg = mgcp_config_alloc();
 	if (!cfg)