- fix from upstream that allows libsm to compile against FreeBSD 13

Submitted by:	Gregory Shapiro
Obtained from:	https://svnweb.freebsd.org/changeset/base/363226

mail/sendmail/files/patch-notify.c

@@ -0,0 +1,26 @@
+--- libsm/notify.c.orig	2020-05-19 19:54:32 UTC
++++ libsm/notify.c
+@@ -10,11 +10,6 @@
+ 
+ #include <sm/gen.h>
+ 
+-#include <sm/conf.h>	/* FDSET_CAST */
+-#include <sm/fdset.h>
+-#include <sm/assert.h>
+-#include <sm/notify.h>
+-
+ #include <sys/types.h>
+ #include <signal.h>
+ #include <stdio.h>
+@@ -24,6 +19,11 @@
+ #include <errno.h>
+ #include <fcntl.h>
+ #include <string.h>	/* for memset() */
++
++#include <sm/conf.h>	/* FDSET_CAST */
++#include <sm/fdset.h>
++#include <sm/assert.h>
++#include <sm/notify.h>
+ 
+ #if SM_NOTIFY_DEBUG
+ #define SM_DBG(p)	fprintf p