zeromq/czmq — pull request #280 by hintjens (2013-10-22 14:14:14+00:00)
Title: Classes that return allocated values now provide a free method

* zstr_free for strings
* zdir_flatten_free for file lists

This ensures frees are done in the same compile unit as mallocs,
which is necessary when using CZMQ in a DLL that may use a heap
separate from the caller's heap.