Tidy ups to ping (doc), dweet (unrequired util) and ddbout (JSHint)

io/ping/88-ping.html

@@ -31,7 +31,7 @@
 
 <script type="text/x-red" data-help-name="ping">
     <p>Pings a machine and returns the trip time in mS.</p>
-    <p>Returns <b>false</b> if no response received within 3 seconds, or if the host is unresolveable.</p>
+    <p>Returns <b>false</b> if no response received within 5 seconds, or if the host is unresolveable.</p>
     <p>Default ping is every 20 seconds but can be configured.</p>
 </script>
 

social/dweetio/55-dweetio.js

@@ -17,7 +17,6 @@
 module.exports = function(RED) {
     "use strict";
     var DweetClient = require("node-dweetio");
-    var util = require('util');
     var dweetio = null;
 
     function DweetioOutNode(n) {

storage/ddb/69-ddbout.js

@@ -36,7 +36,7 @@ function DDBOutNode(n) {
             ddb.putItem({ "TableName": this.table,
                           "Item": attrWrapper.wrap(msg.payload) },
             function(err, data) {
-                err && util.log(err);
+                if (err) { util.log(err); }
             });
         }
     });