Targeted backport of a java.util.Inflater fix.

This has been causing trouble for Gmail. The original fix cleaned up large
parts of the java.util.zip code; this just contains the active ingredient.

(I've excluded the error-handling change to this same function because
that hasn't been tested in the real world yet.)

Bug: 3220923
Change-Id: Ib4bc585a45061ef55c29f09f2bd650c772aab64d