Set kudos to null if no answer is starred

This fixes the bug we saw last night where nobody could submit judging
results until they had starred at least one item.

diff --git a/empathy/empathy.jsx b/empathy/empathy.jsx
index 5782b7879076bdd8812bccffc58a281b63760d5b..bc70a85f0df820b34c552de473df8d971352f1b4 100644 (file)
--- a/empathy/empathy.jsx
+++ b/empathy/empathy.jsx
@@ -503,7 +503,7 @@ class Ambiguities extends React.PureComponent {
     const response = await fetch_post_json(
       `judged/${this.props.prompt.id}`,{
         word_groups: this.state.word_sets.map(set => Array.from(set)),
-        kudos: Array.from(this.state.starred)
+        kudos: this.state.starred ? Array.from(this.state.starred) : null
       }
     );