Memory leak in React-native

EmployeeSearchList.js

/**
 * Created by hmxdeveloper on 02/07/15.
 */

var React = require('react-native'),
    icons = require('../../utils/icons'),
    database = require('../../data/database'),
    DatabaseUpdateMixin = require('../../mixins/DatabaseUpdateMixin'),
    _ = require('../../translations');

var {
    ScrollView,
    Text,
    View,
    TextInput,
    ActivityIndicatorIOS,
    TouchableHighlight
    } = React;

var EmployeeSearchList = React.createClass({
    mixins: [DatabaseUpdateMixin],
    getInitialState: function () {
        return {
            search: '',
            data: [],
            loading: true
        };
    },

    setSearchText: function (text) {
        this.setState({
            search: text
        });
    },

    loadData: function () {
        this.setState({loading: true});
        database.employee.search(this.state.search)
            .then(data => this.setState({
                data: data,
                loading: false
            }));
    },

    render: function () {
        var list = [];
        if (this.state.loading)
        {
            list.push(<ActivityIndicatorIOS size="large" style={styles.center} key={-1}/>);
        }
        else if (!this.state.data.length)
        {
            list.push(<Text style={styles.center} key={-2}>{_('noResults')}</Text>);
        }
        else
        {
            this.state.data.forEach(row => {
                console.log(row);
                list.push(<TouchableHighlight key={row.Oid}>
                    <Text>
                        {row.Fullname}
                    </Text>
                </TouchableHighlight>)
            });
        }
        return <View>
            <View style={styles.inputContainer}>
                <TextInput style={styles.input} onChangetext={this.setSearchText}
                           onSubmitEnding={this.loadData} returnKeyType="search"
                           placeholder={icons.search + " Search"} autoCorrect={false}
                           textAlign="center" autoCapitalize="none" clearButtonMode="always"/>
            </View>
            <ScrollView key={list.length}>
                {list}
            </ScrollView>
        </View>;
    }
});

var styles = React.StyleSheet.create({
    inputContainer: {
        backgroundColor: 'gray',
        padding: 5
    },
    input: {
        height: 30,
        width: 230,
        backgroundColor: 'white',
        borderRadius: 5,
        paddingLeft: 10,
        paddingRight: 10
    },
    row: {
        width: 240,
        borderWidth: 1,
        borderColor: 'lightgray',
        paddingLeft: 15,
        paddingTop: 9,
        paddingBottom: 9
    },
    active: {
        backgroundColor: '#4F1B59',
        color: 'white'
    },
    rowText: {
        fontSize: 18,
        fontWeight: '400',
        color: '#6F3B79'
    },
    center: {
        width: 220,
        alignSelf: 'center',
        //textAlign: 'center'
    }
});

module.exports = EmployeeSearchList;