Only process the var_args argument to open() if flags contain O_CREAT.

This avoids a bus error crash when using esddsp.

PR:		80382

audio/esound/Makefile

@@ -7,7 +7,7 @@
 
 PORTNAME=	esound
 PORTVERSION=	0.2.35
-PORTREVISION=	1
+PORTREVISION=	2
 CATEGORIES=	audio
 MASTER_SITES=	${MASTER_SITE_GNOME}
 MASTER_SITE_SUBDIR=	sources/${PORTNAME}/0.2

audio/esound/files/patch-esddsp.c

@@ -0,0 +1,18 @@
+--- esddsp.c.orig	Tue Apr 26 22:41:23 2005
++++ esddsp.c	Tue Apr 26 22:42:04 2005
+@@ -223,9 +223,12 @@ open (const char *pathname, int flags, .
+ 
+   dsp_init ();
+ 
+-  va_start (args, flags);
+-  mode = va_arg (args, mode_t);
+-  va_end (args);
++  if ((flags & O_CREAT) != 0)
++    {
++      va_start (args, flags);
++      mode = va_arg (args, int);
++      va_end (args);
++    }
+ 
+   if (!strcmp (pathname, "/dev/dsp"))
+     {