mgcp_test: release endpoints after use

The test function test_multilple_codec() in mgcp_test.c creates a
lot of connections, but it never releases them. Just freeing the
cfg object is not enough since the UDP ports stay open and this
may interfere with other tests that also create connections
(port numbers).

- Make sure all endpoints are released when test_multilple_codec()
  is done.

Change-Id: Ic13b4368162149ec36c93f4188fa4c71166e08d5
1 file changed