fix(mixpanel): fix issue when not passing eventProperties (#927)
fix(mixpanel): fix issue when not passing eventProperties (#927)


klirix/ionic-native,klirix/ionic-native,xueron/ionic-native,xueron/ionic-native,xueron/ionic-native,xueron/ionic-native,klirix/ionic-native,driftyco/ionic-native,driftyco/ionic-native,driftyco/ionic-native