Use early return instead of else

[MAILPOET-3848]

assets/js/src/newsletters/automatic_emails/events_conditions.jsx

@@ -86,7 +86,8 @@ class EventsConditions extends React.Component {
     e.preventDefault();
     if (!this.isValid()) {
       this.validate();
-    } else {
+      return;
+    }
     const { history } = this.props;
     const {
       eventSlug, afterTimeType, afterTimeNumber, event, segment, eventOptionValue,
@@ -131,7 +132,6 @@ class EventsConditions extends React.Component {
       }
     });
   }
-  }
 
   getEvent(eventSlug) {
     return this.emailEvents[eventSlug];

assets/js/src/newsletters/types/welcome/welcome.jsx

@@ -51,8 +51,9 @@ class NewsletterWelcome extends React.Component {
   handleNext(event) {
     event.preventDefault();
     if (!this.isValid()) {
-      jQuery('#welcome_scheduling').parsley().validate();
+      this.validate();
-    } else {
+      return;
+    }
     MailPoet.Ajax.post({
       api_version: window.mailpoet_api_version,
       endpoint: 'newsletters',
@@ -72,10 +73,11 @@ class NewsletterWelcome extends React.Component {
       }
     });
   }
-  }
 
   isValid = () => jQuery('#welcome_scheduling').parsley().isValid();
 
+  validate = () => jQuery('#welcome_scheduling').parsley().validate();
+
   showTemplateSelection(newsletterId) {
     this.props.history.push(`/template/${newsletterId}`);
   }