A link between Wikileaks and the Russian government has never been substantiated. The "didn't publish Russian leaks" smear is one of many.

The "Russian leaks" that Wikileaks declined were sent to them during the DNC/Podesta/Hillary email release when their resources were obviously stretched. The "leaks" were mostly public, were deemed unimportant and were declined. As we know that didn't stop whoever anonymously submitted these documents from immediately using this to orchestrate a smear campaign against Wikileaks with full compliance of the media (funny timing during the DNC email release, wonder who it could have been?)

A little later the "leaks" were fully published elsewhere and nobody cared (but let's not kid ourselves that anybody who claimed to care actually cared at all).