[patch request] erroneous lines on PS export/printing

[rmolina]

There is a bugreport in Debian BTS about qcad community generating erroneous lines on printing to file.
Two dxf files are provided, and using this files the problem is confirmed on 2.0.5.0-1:

• qcad-ps-bug.dxf
• qcad-ps-bug2.dxf

After printing to PS, additional/erroneous lines are generated.
Details (including output PS files) on Bug#519294. Patches from community are welcome

Thanks

[janif]

Erraneous lines are on these drawings are caused by bad usage of hatches. I think one hatch/solid fill should only cover one continuous area.

Hatcing isn't perfect in community edition but I think this is a user error.