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make LOG_TRANS() NULL-safe again 

Previous patch [1] removed NULL-safety from LOG_TRANS(). Fix that.

In case a trans is NULL, it is fine to log in the DMSC category, since the
context should still be general (erratic message or other initial problems).

[1] 7f85acea9b / I6dfe5b98fb9e884c2dde61d603832dafceb12123
    "LOG_TRANS: store subsys in trans, unify USSD logging back to DMM"

Change-Id: I6e36c47bf828dd073b36c6301bbeabcc28e101e6
This commit is contained in:
Sylvain Munaut 2019-05-10 11:56:02 +02:00 committed by Harald Welte
parent ffd522ec6f
commit 762bb042ec
1 changed files with 1 additions and 1 deletions
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2
include/osmocom/msc/transaction.h
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@ -27,7 +27,7 @@ struct vty;
##args)
#define LOG_TRANS(trans, level, fmt, args...) \
LOG_TRANS_CAT(trans, (trans)->log_subsys, level, fmt, ##args)
LOG_TRANS_CAT(trans, (trans) ? (trans)->log_subsys : DMSC, level, fmt, ##args)
enum bridge_state {
BRIDGE_STATE_NONE,