Fix build details poller update

Summary: Was seen after canceling a build - the "Recreate Build" button wasn't showing until page reload

Reviewers: vishal

Reviewed By: vishal

Maniphest Tasks: T25170

Differential Revision: https://tails.corp.dropbox.com/D84611

static/js/states/buildDetails.js

@@ -34,8 +34,8 @@ define([
           return;
         }
 
-        $scope.hasTests = (features.tests && buildData.stats.test_count);
-        $scope.isFinished = (buildData.status.id == 'finished');
+        $scope.hasTests = (features.tests && data.stats.test_count);
+        $scope.isFinished = (data.status.id == 'finished');
         $scope.build = data;
       }