[varnishcache/varnish-cache] 59c634: printf format fix

[Poul-Henning Kamp]

  Branch: refs/heads/master
  Home:   https://github.com/varnishcache/varnish-cache
  Commit: 59c6345846dfe5cca62d99cfbb4e6934d64880a6
      https://github.com/varnishcache/varnish-cache/commit/59c6345846dfe5cca62d99cfbb4e6934d64880a6
  Author: Poul-Henning Kamp <phk at FreeBSD.org>
  Date:   2015-11-11 (Wed, 11 Nov 2015)

  Changed paths:
    M bin/varnishd/cache/cache_ban.c

  Log Message:
  -----------
  printf format fix