GSCON: avoid sending connection oriented data when not connected

When no connection is present and had never existed, then
conn->sccp.msc is unpopulated. However, there may be situations where
osmo_bsc_sigtran_send() is executed while no connection is present.

At the moment we assert on conn->sccp.msc, which would cause osmo-bsc
to exit. In order to avoid this, better check conn->sccp.msc and drop
the sccp message when the check is negative.

- Remove assertion, add check.

Change-Id: I4eaa983702224e5995a388ea9890ee04212eb569
Related: OS#3446
1 file changed