voteskip: add early exit for duplicate votes

package.json

@@ -2,7 +2,7 @@
   "author": "Calvin Montgomery",
   "name": "CyTube",
   "description": "Online media synchronizer and chat",
-  "version": "3.60.0",
+  "version": "3.60.1",
   "repository": {
     "url": "http://github.com/calzoneman/sync"
   },

src/channel/voteskip.js

@@ -40,7 +40,10 @@ VoteskipModule.prototype.handleVoteskip = function (user) {
         this.poll = new Poll("[server]", "voteskip", ["skip"], false);
     }
 
-    this.poll.vote(user.realip, 0);
+    if (!this.poll.vote(user.realip, 0)) {
+        // Vote was already recorded for this IP, no update needed
+        return;
+    }
 
     var title = "";
     if (this.channel.modules.playlist.current) {

src/poll.js

@@ -24,7 +24,9 @@ Poll.prototype.vote = function(ip, option) {
     if(!(ip in this.votes) || this.votes[ip] == null) {
         this.votes[ip] = option;
         this.counts[option]++;
+        return true;
     }
+    return false;
 };
 
 Poll.prototype.unvote = function(ip) {