Based on observation of different EMF+ files (eg. exported by ChemDraw), there is minimal value of line width. This commit is fixing all such import issues. Change-Id: I5c26a1b511363eb1e429bf770ad0f482b124ecb5 Reviewed-on: https://gerrit.libreoffice.org/37319 Tested-by: Jenkins <ci@libreoffice.org> Reviewed-by: Bartosz Kosiorek <gang65@poczta.onet.pl>