Merge pull request #568 from extcode/bugfix/remove_unnecessary_check_…

…in_condition

[BUGFIX] Remove unnecessary check in condition

Classes/ViewHelpers/AdditionalJsonViewHelper.php

@@ -51,7 +51,7 @@ public function render(): string
         if (is_string($data)) {
             $data = json_decode($data, true);
 
-            if (!$data || empty($data)) {
+            if (empty($data)) {
                 return 'Parameter additional seems to be an invalid JSON string!';
             }
         }