clear similar and inflection if error

src/components/DictionaryView.vue

@@ -435,6 +435,8 @@ export default {
       this.waiting_for_articles = false
       this.no_results = false
       this.search_results = {}
+      this.inflection_suggestions = []
+      this.similar = []
       if (error.response) {
         if (error.response.status == 404) {
           if (article) {