Roberto Ierusalimschy 6d04537ea6 A to-be-closed variable must have a closable value (or be nil) ...

It is an error for a to-be-closed variable to have a non-closable
non-nil value when it is being closed. This situation does not seem to
be useful and often hints to an error. (Particularly in the C API, it is
easy to change a to-be-closed index by mistake.)

2018-11-29 16:02:44 -02:00

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