bschofield opened a new pull request #8325:
URL: https://github.com/apache/pulsar/pull/8325
Fixes #8311.
### Motivation
In the C/C++ glue code, file *c_Producer.cc* function
*handle_producer_send()*, a new `pulsar_message_id_t` is created. This needs to
be freed at some point.
Because of issues with legacy C clients, it is not possible to call *delete*
from inside `c_Producer.cc` (see commentary on #8311). Instead, the client must
call *pulsar_message_id_free()*.
Previously, the cgo interface was not freeing this message ID, which caused
a memory leak on every message sent.
### Modifications
This PR adds the missing calls to *pulsar_message_id_free()*. The calls are
added in the cgo layer, in *pulsarProducerSendCallbackProxy()* and
*pulsarProducerSendCallbackProxyWithMsgID()*.
### Verifying this change
This change is a trivial rework / code cleanup without any test coverage.
### Does this pull request potentially affect one of the following parts:
- Dependencies (does it add or upgrade a dependency): no
- The public API: no
- The schema: no
- The default values of configurations: no
- The wire protocol: no
- The rest endpoints: no
- The admin cli options: no
- Anything that affects deployment: no
### Documentation
- Does this pull request introduce a new feature? no
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