Vertical spacing bug with TabStaff

[Alexander Kobel]

Hi,

the attached file causes the last (Tab)Staff to run into the footer and 
below.
Looks related to http://code.google.com/p/lilypond/issues/detail?id=850 
- but the error still occurs in the current git snapshot, and this one 
is marked as fixed.


Cheers,
Alexander

\version "2.13.7"
\header {
  title = "Take some space"
  subtitle = "Sorry about this clutter:"
  subsubtitle = "I could not get the collision without it."
  composer = "The repeat / volta also seems to matter"
  arranger = "Look at the bottom system!"
}

x = \repeat unfold 3 <e'' e>4
notes = {
  \time 3/4
  \repeat volta 2 { \repeat unfold 7 \x }
  \alternative {
    { \x \x }
    { \x \x }
  }
  \repeat unfold 50 \x
  %% With manual page breaks, everything is fine again.
%  \repeat unfold 30 \x \pageBreak \repeat unfold 20 \x
}

\score {
  <<
    \new Staff \notes
    \new TabStaff \notes
  >>
}