Fixes #6259

Fixed issue that would cause the upgrade script to completely
wipe your customJS. This was caused by meta.config not being
populated during upgrade scripts (but only when run with
./nodebb upgrade... odd.)

src/upgrades/1.7.0/generate-custom-html.js

@@ -1,12 +1,17 @@
 'use strict';
 
+var db = require('../../database');
 var meta = require('../../meta');
 
 module.exports = {
 	name: 'Generate customHTML block from old customJS setting',
 	timestamp: Date.UTC(2017, 9, 12),
 	method: function (callback) {
-		var newHTML = meta.config.customJS;
+		db.getObjectField('config', 'customJS', function (err, newHTML) {
+			if (err) {
+				return callback(err);
+			}
+
 			var newJS = [];
 
 			// Forgive me for parsing HTML with regex...
@@ -28,10 +33,13 @@ module.exports = {
 			// Combine newJS array
 			newJS = newJS.join('\n\n');
 
+			console.log('wut', newJS, 'and', newHTML);
+
 			// Write both values to config
 			meta.configs.setMultiple({
 				customHTML: newHTML,
 				customJS: newJS,
 			}, callback);
+		});
 	},
 };