[PATCH 0/1] MR9431: ole32: implement proper file flushing in FileLockBytes

[Jiajin Cui (＠jin-king1)]

Previously the Flush method was a no-op that always returned S_OK
Now it properly calls FlushFileBuffers on the underlying file handle
This ensures that all buffered data is written to disk
Added error handling to return STG_E_WRITEFAULT on flush failures
This fixes potential data loss issues when using file-based lock bytes

Log: Fixed file flushing to prevent data loss in file operations

Signed-off-by: Jiajin Cui