Strange loop executed only once!

[Łukasz Czerwiński]

Hi,

I have spotted a strange loop in lily/ledger-line-spanner.cc (lines 46-69):

Direction d = UP;

  do

    {

      .............

    }

  while (flip (&d) != DOWN);

It will be executed only once - with d set to UP. To be executed for d = UP and then d = DOWN, it should be: 

while (flip (&d) != UP);

Could someone take a look at this?

Łukasz