delete unnecessary check in a loop in processDMsnippet()

js/twister_directmsg.js

@@ -20,7 +20,6 @@ function processDMsnippet(dmUsers, dmThreadList) {
     dmThreadList.empty();
 
     for (var u in dmUsers) {
-        if (dmUsers[u]) {
         // convert snipped to html and add it to date-sorted list
         var dmItem = dmDataToSnippetItem(dmUsers[u][0], u);
         var timeDmItem = parseInt(dmItem.attr('data-time'));
@@ -37,7 +36,6 @@ function processDMsnippet(dmUsers, dmThreadList) {
         if (j === existingItems.length)
             dmThreadList.append(dmItem);
     }
-    }
     $.MAL.dmThreadListLoaded();
 }