message: Regression: Jitsi not leaving call properly
diff: import React from 'react';
  -import { StyleSheet } from 'react-native';
  +import { BackHandler, StyleSheet } from 'react-native';
  import JitsiMeet, { JitsiMeetView as RNJitsiMeetView } from 'react-native-jitsi-meet';
  import BackgroundTimer from 'react-native-background-timer';
  import { connect } from 'react-redux';
  @@ -69,6 +69,7 @@ class JitsiMeetView extends React.Component<IJitsiMeetViewProps, IJitsiMeetViewS
  }
  }, 1000);
  }
  + BackHandler.addEventListener('hardwareBackPress', this.endCall);
  }
  componentWillUnmount() {
  @@ -78,8 +79,16 @@ class JitsiMeetView extends React.Component<IJitsiMeetViewProps, IJitsiMeetViewS
  this.jitsiTimeout = null;
  BackgroundTimer.stopBackgroundTimer();
  }
  + BackHandler.removeEventListener('hardwareBackPress', this.endCall);
  + if (isIOS) {
  JitsiMeet.endCall();
  }
  + }
  +
  + endCall = () => {
  + JitsiMeet.endCall();
  + return null;
  + };
  onConferenceWillJoin = () => {
  this.setState({ loading: false });
  