ho hum, another incorrect bound to snprintf

margarida@ ok, submitted upstream

productivity/siag/patches/patch-egon_fileio_ppt_c

@@ -0,0 +1,12 @@
+$OpenBSD: patch-egon_fileio_ppt_c,v 1.1 2003/04/16 16:44:49 avsm Exp $
+--- egon/fileio_ppt.c.orig	Wed Apr 16 16:07:53 2003
++++ egon/fileio_ppt.c	Wed Apr 16 16:08:36 2003
+@@ -479,7 +479,7 @@ static int load(char *fn, buffer *b)
+ 	row = 1;
+ 	sty = MW_STY_DEFAULT;
+ 
+-	strncpy(filename, fn, 1000);
++	strncpy(filename, fn, sizeof filename);
+ 	cfs = cole_mount(filename, &colerrno);
+ 	if (cfs == NULL) {
+ 		cole_perror("Egon", colerrno);