Apply by doing:
	cd /usr/src
	patch -p0 < 020_cvs.patch

And then rebuild and install cvs:
	cd gnu/usr.bin/cvs
	make -f Makefile.bsd-wrapper obj
	make -f Makefile.bsd-wrapper
	make -f Makefile.bsd-wrapper install

Index: gnu/usr.bin/cvs/src/server.c
===================================================================
RCS file: /cvs/src/gnu/usr.bin/cvs/src/server.c,v
retrieving revision 1.26
diff -u -r1.26 server.c
--- gnu/usr.bin/cvs/src/server.c	29 Sep 2001 00:00:39 -0000	1.26
+++ gnu/usr.bin/cvs/src/server.c	21 Jan 2003 03:32:23 -0000
@@ -977,9 +977,6 @@
 	return;
     }
 
-    if (dir_name != NULL)
-	free (dir_name);
-
     dir_len = strlen (dir);
 
     /* Check for a trailing '/'.  This is not ISDIRSEP because \ in the
@@ -994,6 +991,9 @@
 		     "E protocol error: invalid directory syntax in %s", dir);
 	return;
     }
+
+    if (dir_name != NULL)
+	free (dir_name);
 
     dir_name = malloc (strlen (server_temp_dir) + dir_len + 40);
     if (dir_name == NULL)