add a few checks where it seems appropriate

src/cryptonote_core/cryptonote_core.cpp

@@ -447,6 +447,7 @@ namespace cryptonote
       m_nettype = FAKECHAIN;
     }
     bool r = handle_command_line(vm);
+    CHECK_AND_ASSERT_MES(r, false, "Failed to handle command line");
 
     std::string db_type = command_line::get_arg(vm, cryptonote::arg_db_type);
     std::string db_sync_mode = command_line::get_arg(vm, cryptonote::arg_db_sync_mode);
@@ -634,6 +635,7 @@ namespace cryptonote
     };
     const difficulty_type fixed_difficulty = command_line::get_arg(vm, arg_fixed_difficulty);
     r = m_blockchain_storage.init(db.release(), m_nettype, m_offline, regtest ? &regtest_test_options : test_options, fixed_difficulty, get_checkpoints);
+    CHECK_AND_ASSERT_MES(r, false, "Failed to initialize blockchain storage");
 
     r = m_mempool.init(max_txpool_weight);
     CHECK_AND_ASSERT_MES(r, false, "Failed to initialize memory pool");