Check for osmo_fsm_register() error return value

Change-Id: Idda1a4050cf9d285225ae48a4ba6f48c04f9598b

src/bankd_client_fsm.c

@@ -271,5 +271,5 @@ int bankd_conn_fsm_alloc(struct bankd_client *bc)
 
 static __attribute__((constructor)) void on_dso_load(void)
 {
-	osmo_fsm_register(&remsim_client_bankd_fsm);
+	OSMO_ASSERT(osmo_fsm_register(&remsim_client_bankd_fsm) == 0);
 }

src/rspro_client_fsm.c

@@ -382,5 +382,5 @@ int server_conn_fsm_alloc(void *ctx, struct rspro_server_conn *srvc)
 
 static __attribute__((constructor)) void on_dso_load(void)
 {
-	osmo_fsm_register(&rspro_client_server_fsm);
+	OSMO_ASSERT(osmo_fsm_register(&rspro_client_server_fsm) == 0);
 }

src/server/rspro_server.c

@@ -491,7 +491,7 @@ struct osmo_fsm_inst *server_client_fsm_alloc(void *ctx, struct rspro_client_con
 
 static __attribute__((constructor)) void on_dso_load(void)
 {
-	osmo_fsm_register(&remsim_server_client_fsm);
+	OSMO_ASSERT(osmo_fsm_register(&remsim_server_client_fsm) == 0);
 }