dmiller 379759d539 Avoid __pairs metamethod in stdnse.keys ...

This allows stdnse.keys to be used in a __pairs metamethod to, for
instance, yield keys in sorted order. Using next() bypasses the __pairs
metamethod that would be called when pairs() was used. Otherwise,
infinite recursion was possible.

2014-09-23 05:23:06 +00:00

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