Willy Tarreau 23605eddb1 MINOR: listener: add listener_get_next_id() to find next free listener ID
This was previously achieved via the generic get_next_id() but we'll soon
get rid of generic ID trees so let's have a dedicated listener_get_next_id().
As a bonus it reduces the exposure of the tree's root outside of the functions.
2025-09-16 09:23:46 +02:00
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