Decrements the reference count of tree by one. If the reference count
drops to 0, all keys and values will be destroyed (if destroy
functions were specified) and all memory allocated by tree will be
released.
It is safe to call this function from any thread.
Since 2.22
Decrements the reference count of tree by one. If the reference count drops to 0, all keys and values will be destroyed (if destroy functions were specified) and all memory allocated by tree will be released. It is safe to call this function from any thread. Since 2.22