In the beginning of endOfRowAction(), the current value of
m_aTmpTableProperties.back( ) is stored in a temporary variable.
Then, the width of table may be put into m_aTmpTableProperties.back( ).
In the end, this temp variable is assigned to TableManager::mState.mTableProps
and the m_aTmpTableProperties.back( ) is reset.

In the middle, the m_aTmpTableProperties.back( ) may be replaced in
endLevel()/startLevel() sequence (if new table is started). In that case,
the width calculations go to a different object than stored in temp var.
Consequently, that value will be discarded and replaced with initial
stored in temp var. Fixed that by directly operating with temp var
instead of m_aTmpTableProperties.back( ).

Also, the value of m_nCell was not kept over endLevel()/startLevel() sequence
and that prevented from calculating width. Fixed that.

Also, removed leftovers from commit cbd0fbc2.

Change-Id: If85dbb715e7c60f60043f9d60d6a3c3d02277add
Reviewed-on: https://gerrit.libreoffice.org/20052Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Miklos Vajna <vmiklos@collabora.co.uk>