Clear emoji suggestion list if there no matches (#4290)

webapp/components/suggestion/emoticon_provider.jsx

@@ -90,8 +90,8 @@ export default class EmoticonProvider {
 
             const terms = matched.map((emoticon) => ':' + emoticon.name + ':');
 
+            SuggestionStore.clearSuggestions(suggestionId);
             if (terms.length > 0) {
-                SuggestionStore.clearSuggestions(suggestionId);
                 SuggestionStore.addSuggestions(suggestionId, terms, matched, EmoticonSuggestion, text);
 
                 hasSuggestions = true;