MAGETWO-97210: Add Product by SKU to category causes the browser to hang

Author: Oleksandr Iegorov

app/code/Magento/UrlRewrite/Model/Storage/DbStorage.php

@@ -183,9 +183,9 @@ private function deleteOldUrls(array $urls): void
         $checkOldUrlsSelect = clone $oldUrlsSelect;
         $checkOldUrlsSelect->reset(Select::COLUMNS);
         $checkOldUrlsSelect->columns('count(*)');
- 	    $hasOldUrls = (bool)$this->connection->fetchOne($checkOldUrlsSelect);
+        $hasOldUrls = (bool)$this->connection->fetchOne($checkOldUrlsSelect);
 
- 	    if ($hasOldUrls) {
+        if ($hasOldUrls) {
             $this->connection->query(
                 $oldUrlsSelect->deleteFromSelect(
                     $this->resource->getTableName(self::TABLE_NAME)