[Autocomplete] Rethrow BadRequestHttpException in case of malformed extra_options

Author: norkunas

src/Autocomplete/src/Controller/EntityAutocompleteController.php

@@ -76,7 +76,11 @@ private function getExtraOptions(Request $request): array
             return [];
         }
 
-        $extraOptions = $this->getDecodedExtraOptions($request->query->getString(self::EXTRA_OPTIONS));
+        try {
+            $extraOptions = $this->getDecodedExtraOptions($request->query->getString(self::EXTRA_OPTIONS));
+        } catch (\JsonException) {
+            throw new BadRequestHttpException('The extra options cannot be parsed.');
+        }
 
         if (!\array_key_exists(AutocompleteChoiceTypeExtension::CHECKSUM_KEY, $extraOptions)) {
             throw new BadRequestHttpException('The extra options are missing the checksum.');