Change in osmo-mgw[master]: libosmo-mgcp-client: fix memleak: flush pending response queue

[fixeria]

fixeria has uploaded a new patch set (#2). ( https://gerrit.osmocom.org/c/osmo-mgw/+/18881 )

Change subject: libosmo-mgcp-client: fix memleak: flush pending response queue
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libosmo-mgcp-client: fix memleak: flush pending response queue

If the remote MGCP peer closes connection (or simply crashes), the
existing 'mgcp_response_pending' entities will never be removed
from the queue (mgcp->responses_pending).

This problem was noticed while running several LCLS test cases from
ttcn3-bsc-test. Every test case makes osmo-bsc leak two messages.

I found those messages suspicious and assumed that they're related:

  DLMGCP ERROR mgcp_client.c:700 Failed to read:
    r=127.0.0.1:2427<->l=127.0.0.1:2727: 111='Connection refused'
  DLMGCP ERROR mgcp_client.c:700 Failed to read:
    r=127.0.0.1:2427<->l=127.0.0.1:2727: 111='Connection refused'

Let's flush the pending response queue in such cases.

Change-Id: Ia2e89f31685a0822e5cb147a06cc1fc68efc1ec4
Related: OS#4619
---
M src/libosmo-mgcp-client/mgcp_client.c
1 file changed, 17 insertions(+), 0 deletions(-)


  git pull ssh://gerrit.osmocom.org:29418/osmo-mgw refs/changes/81/18881/2
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Gerrit-Project: osmo-mgw
Gerrit-Branch: master
Gerrit-Change-Id: Ia2e89f31685a0822e5cb147a06cc1fc68efc1ec4
Gerrit-Change-Number: 18881
Gerrit-PatchSet: 2
Gerrit-Owner: fixeria <vyanitskiy at sysmocom.de>
Gerrit-CC: Jenkins Builder
Gerrit-MessageType: newpatchset
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