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subd: clear transient billboard on start and shutdown.

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Use NULL on the callback to mean "clear the slot", and call it.

We have do this in two places: the old daemon might die, or the new
daemon might start first.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Rusty Russell
2018-02-23 16:23:47 +10:30
committed by Christian Decker
parent 26b004e5af
commit cca0a5412e
3 changed files with 14 additions and 6 deletions
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10
lightningd/channel.c
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@@ -326,11 +326,13 @@ void channel_set_billboard(struct channel *channel, bool perm, const char *str)
p = &channel->billboard.permanent[channel->state];
else
p = &channel->billboard.transient;
tal_free(*p);
*p = tal_free(*p);
*p = tal_fmt(channel, "%s:%s", channel_state_name(channel), str);
if (taken(str))
tal_free(str);
if (str) {
*p = tal_fmt(channel, "%s:%s", channel_state_name(channel), str);
if (taken(str))
tal_free(str);
}
}
void channel_fail_transient(struct channel *channel, const char *fmt, ...)