zeromq/czmq — pull request #143 by raggi (2013-04-26 01:12:45+00:00)
Title: Enable callbacks on zframe_destroy

This patch is the same as one previously proposed by @methodmissing.

It can be seen in action here: https://github.com/methodmissing/rbczmq/commit/65b0db8e96235a2a81b3ae337c7f2bffbc00cf71