VersionIteratorImpl problem?

I meet with problem in VersionIterator:
Classic nextVersion()/hasNext() loop for VersionIterator become endless.

I think problem with peek/pop misprint:

public Version nextVersion()

{ ....... InternalVersion ret = (InternalVersion) successors.<b>peek</b>(); ...... }

I change to
InternalVersion ret = (InternalVersion) successors.<b>pop</b>();