remove assert from dns.c that's no longer true:

typically the resolve will be pending, but it could be failed if it
just failed and we're working through the 'pending' list, or it could
be valid if some other dnsworker raced us to fill in the entry.


svn:r1164

src/or/dns.c

@@ -203,7 +203,6 @@ void dns_cancel_pending_resolve(char *address, connection_t *onlyconn) {
     return;
   }
 
-  assert(resolve->state == CACHE_STATE_PENDING);
   assert(resolve->pending_connections);
 
   if(onlyconn) {