Move the generate backtrace call from MSGB_ABORT to osmo_panic handler

This has two benefits:
 - All people calling osmo_panic() will have the backtrace
 - It makes the thing build in 'target' mode in osmocom-bb

And one downside:
 - The osmo_panic handler is now in the backtrace
(I can live with that :)

Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
2 files changed