asf patch

[ejc]

asf(8) dumps core if you give it '\n' as input.  More specifically, if
it has less than 2 tokens.
Patch attached.
Thanks to Antonio Huete Jimenez for getting me interested in this.

Index: usr.sbin/asf/asf.c
===================================================================
RCS file: /home/dcvs2/src/usr.sbin/asf/asf.c,v
retrieving revision 1.5
diff -u -r1.5 asf.c
--- usr.sbin/asf/asf.c  19 May 2008 10:13:08 -0000      1.5
+++ usr.sbin/asf/asf.c  10 Jul 2008 21:26:11 -0000
@@ -254,6 +254,8 @@
            quad_t bssaddr;

            tokens = tokenize(buf, token, MAXTOKEN);
+           if (tokens <= 1)
+               continue;
            base = strtoll(token[2], NULL, 16);
            if (!dofind) {
                snprintf(ocbuf,