Angular.js memory leak with ngRepeat on polled data

I've got what seems to be a memory leak in my angular.js app. Basically, the page consists of a table of information that is updated every five seconds from the JSON-encoded result of an AJAX call. I've created a simplified jsfiddle version here: http://jsfiddle.net/alalonde/TtGXW/6/

The controller:

function HostController($scope, $timeout, Data) {
  $scope.encoders = Data.load();
  $scope.refreshInterval = 5;

  $scope.reload = function () {
    $scope.encoders = Data.load();
  };

  $timeout(function doReload() {
    $scope.reload();
    $timeout(doReload, $scope.refreshInterval * 1000);
  }, 5000);
}

A snippet of the template:

<table class="table table-striped table-bordered" ng-controller="HostController">
  <tr>
    <th>Status</th>
  <th>...
  </tr>
  <tr ng-repeat="enc in encoders">
    <td>
      <div>{{ enc.name }}</div>
      <div ng-show="enc.version">
        v{{ enc.version.major }}.{{ enc.version.minor }}-{{ enc.version.rev }}
        <span ng-show="enc.version.user">- {{ enc.version.user }}</span>
      </div>
    </td>
  </tr>
</table>

When taking a heap snapshot in Chrome every minute or so, the memory usage rises slightly each time. I've applied Igor Minar's fix to my local angular.js (https://github.com/angular/angular.js/commit/bd524fc4e5fc0feffe85632a7a6560da6bd9b762) which helped a lot, but the memory usage is still inexorably creeping up.

Any hints on using the Chrome memory profiler with angular.js would be appreciated.