Update processJsonPost.js to store a preview selftext

inc/processJsonPost.js

@@ -155,6 +155,7 @@ async function processJsonPost(json, parsed, user_preferences) {
     images: null,
     crosspost: false,
     selftext: unescape(post.selftext_html),
+    selftext_preview: post.selftext.substr(0, 120),
     poll_data: post.poll_data,
     link_flair:
       user_preferences.flairs != 'false' ? await formatLinkFlair(post) : '',

views/includes/meta_post.pug

@@ -1,5 +1,5 @@
 meta(property='og:title', content=cleanTitle(post.title) + ' : r/' + subreddit)
-meta(property='og:description', content='' + post.selftext)
+meta(property='og:description', content='' + post.selftext_preview)
 meta(property='og:author_name', content='u/' + post.author)
 if !post.has_media
   if post.gallery