Include stdarg.h if possible.

src/server/log.h

 /*
- * $Id: log.h,v 0.11 1996/08/03 01:31:14 ceder Exp $
+ * $Id: log.h,v 0.12 1996/09/01 19:32:54 inge Exp $
  * Copyright (C) 1991, 1993, 1994, 1995, 1996  Lysator Academic Computer Association.
  *
  * This file is part of the LysKOM server.
@@ -23,7 +23,7 @@
  * Please mail bug reports to bug-lyskom@lysator.liu.se. 
  */
 /*
- * $Id: log.h,v 0.11 1996/08/03 01:31:14 ceder Exp $
+ * $Id: log.h,v 0.12 1996/09/01 19:32:54 inge Exp $
  *
  * log.h
  *
@@ -33,6 +33,10 @@
 #ifndef __LYSKOM__LOG_H__
 #define __LYSKOM__LOG_H__
 
+#ifdef HAVE_STDARG_H
+#  include <stdarg.h>
+#endif
+
 /*
  * Add a string to the log file.
  */