small polish

Author: zvonand

src/Storages/ObjectStorage/DataLakes/Iceberg/IcebergDataObjectInfo.cpp

@@ -1,3 +1,4 @@
+#include <Poco/String.h>
 #include "config.h"
 
 #if USE_AVRO
@@ -42,12 +43,7 @@ IcebergDataObjectInfo::IcebergDataObjectInfo(Iceberg::ManifestFileEntry data_man
     , underlying_format_read_schema_id(data_manifest_file_entry_.schema_id)
     , sequence_number(data_manifest_file_entry_.added_sequence_number)
 {
-    auto toupper = [](String & str)
-    {
-        std::transform(str.begin(), str.end(), str.begin(), ::toupper);
-        return str;
-    };
-    if (!position_deletes_objects.empty() && toupper(data_manifest_file_entry_.file_format) != "PARQUET")
+    if (!position_deletes_objects.empty() && Poco::toUpper(data_manifest_file_entry_.file_format) != "PARQUET")
     {
         throw Exception(
             ErrorCodes::NOT_IMPLEMENTED,