Solr commitwithin is not happening for deletebyId on solr 4.10.4

Hi,
I'm using solr 4.10.4 and solrj 4.10.4 and when issuing a deleteById with a commitWithin I observe that the commit doesn't get executed.
I looked at the sources and noticed that the patch attached to issue 6984 is not applied to this version of solrj.
Which solrj versions solves this bug?
As a workaround if I issue a deleteByQuery and the query selectd a single id, of a nonexistent document, will I successfully obtain commit? If not is there any other workaround?