The positions (including current line) might have changed in Next(),
even though it's "single line IF", due to line continuation char _.
nP* members haven't been updated yet, so next call to Next() after
Push() would restore wrong positions.
I didn't store values of nLine/nCol1/nCol2 before if( IsEoln( Next() ) ),
(doing which would allow to mimic Peek() behaviour), because I don't
see how restoring their old values in the single line IF case would
affect the logic. Possibly something to do later.
Change-Id: I5a2a5c307ccbba77e9c02db50a04e33d71cd15a8
Reviewed-on: https://gerrit.libreoffice.org/81204
Tested-by: Jenkins
Reviewed-by: Mike Kaganski <mike.kaganski@collabora.com>