Fix accidental adding of change listener on unmount

web/react/components/more_direct_channels.jsx

@@ -57,7 +57,7 @@ class MoreDirectChannels extends React.Component {
     }
 
     componentWillUnmount() {
-        UserStore.addChangeListener(this.handleUserChange);
+        UserStore.removeChangeListener(this.handleUserChange);
     }
 
     componentDidUpdate(prevProps) {
@@ -318,4 +318,4 @@ MoreDirectChannels.propTypes = {
     onModalDismissed: React.PropTypes.func
 };
 
-export default injectIntl(MoreDirectChannels);
+export default injectIntl(MoreDirectChannels);