Fix errant comma

dist/peer.js

@@ -2082,7 +2082,7 @@ Negotiator._setupListeners = function(connection, pc, pc_id) {
           type: connection.type,
           connectionId: connection.id
         },
-        dst: peerId,
+        dst: peerId
       });
     }
   };

lib/negotiator.js

@@ -134,7 +134,7 @@ Negotiator._setupListeners = function(connection, pc, pc_id) {
           type: connection.type,
           connectionId: connection.id
         },
-        dst: peerId,
+        dst: peerId
       });
     }
   };