Adding null check for IResourceManagerClient in dump()

            snprintf(buffer, SIZE, "        Id: %lld\n", (long long)infos[j].clientId);

            result.append(buffer);

            std::string clientName;

            std::string clientName = "<unknown client>";

            if (infos[j].client != nullptr) {

                Status status = infos[j].client->getName(&clientName);

            if (!status.isOk()) {

                clientName = "<unknown client>";

            }

            snprintf(buffer, SIZE, "        Name: %s\n", clientName.c_str());

            result.append(buffer);