Apply by doing:
	cd /usr/src
	patch -p0 < 026_talkd.patch
	cd libexec/talkd
	make obj && make depend && make && make install

Index: libexec/talkd/announce.c
===================================================================
RCS file: /cvs/src/libexec/talkd/announce.c,v
retrieving revision 1.8
retrieving revision 1.9
diff -u -r1.8 -r1.9
--- libexec/talkd/announce.c	1998/08/18 03:42:10	1.8
+++ libexec/talkd/announce.c	2000/07/06 00:01:45	1.9
@@ -160,6 +160,6 @@
 		*(bptr++) = '\n';
 	}
 	*bptr = '\0';
-	fprintf(tf, big_buf);
+	fprintf(tf, "%s", big_buf);
 	fflush(tf);
 }