[asalkeld/libqb] 813dfb: ptrie: deref the current node in trie_iter_free()

[Angus Salkeld]

  Branch: refs/heads/master
  Home:   https://github.com/asalkeld/libqb
  Commit: 813dfb5fd2bce6ac1353b03b5bed3a7eb46dc278
      https://github.com/asalkeld/libqb/commit/813dfb5fd2bce6ac1353b03b5bed3a7e...
  Author: Angus Salkeld <asalkeld(a)redhat.com&gt;
  Date:   2012-12-05 (Wed, 05 Dec 2012)

  Changed paths:
    M lib/trie.c
    M tests/check_map.c

  Log Message:
  -----------
  ptrie: deref the current node in trie_iter_free()

If free'ing the iterator before getting to the last
node make sure we de-ref the current node. Else we
will not be able to delete the node.

fixes #44

Signed-off-by: Angus Salkeld <asalkeld(a)redhat.com&gt;