`Function::bind`: simply clone the function if `args` are empty `MultiValue`
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@ -208,6 +208,10 @@ impl<'lua> Function<'lua> {
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let args = args.to_lua_multi(lua)?;
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let nargs = args.len() as c_int;
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if nargs == 0 {
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return Ok(self.clone());
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}
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if nargs + 1 > ffi::LUA_MAX_UPVALUES {
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return Err(Error::BindError);
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}
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