Use single logger if StdoutLogFile and StderrLogFile are the same.
Use single logger if StdoutLogFile and StderrLogFile are the same.

Signed-off-by: Domen Ipavec <d11d22f7dbd5ce2cc259c953391f3b291ef56fb5@ipavec.net>

hamaxx/gracevisor,hamaxx/gracevisor