[bsc_hack] Call handle_options before bootstrapping the network

Otherwise we can not specify which config file to use and -h will
not work when there is no openbsc.cfg in the cwd.
diff --git a/openbsc/src/bsc_hack.c b/openbsc/src/bsc_hack.c
index a107fcb..3710440 100644
--- a/openbsc/src/bsc_hack.c
+++ b/openbsc/src/bsc_hack.c
@@ -232,13 +232,13 @@
 	vty_init(&vty_info);
 	bsc_vty_init();
 
+	/* parse options */
+	handle_options(argc, argv);
+
 	rc = bsc_bootstrap_network(mncc_recv, config_file);
 	if (rc < 0)
 		exit(1);
 
-	/* parse options */
-	handle_options(argc, argv);
-
 	/* seed the PRNG */
 	srand(time(NULL));