Possible stack leak

[KevBruner]

While debugging an issue using getVariant with a table that had a __pairs metamethod, I noticed that the stack top was creeping up 1 index per frame, even before I started modifying code.

By adding printf( "stack top %d\n", lua_gettop(state)); at the entry of getVariant it would produce a result that was constantly incrementing, which is suspicious. I'm not familiar enough with the rest of the code to investigate more deeply at the moment.

[SumianVoice]

Possible relation to #208?