Comment 0 for bug 1220143

Steps to reproduce
1) launch inkscape with default prefs, default template
2) draw rectangle
3) apply 'Filters > Bevels > Bloom'
4) open filter editor
5) select filter and duplicate it (via context menu)
6) close filter editor ('Ctrl+W')
7) close document window ('Ctrl+W', discard changes)
-> crash

Program received signal EXC_BAD_ACCESS, Could not access memory.
Reason: KERN_INVALID_ADDRESS at address: 0x0000000000000000
0x0000000100b216e4 in Inkscape::UI::Dialog::FilterEffectsDialog::FilterModifier::on_filter_reorder (this=0x134c72ef0, path=@0x7fff5fbfdef8) at filter-effects-dialog.cpp:1313
1313 object->getRepr()->setPosition(0);

System info:
Reproduced on Ubuntu 13.04 (VM 64bit, trunk PPA) and OS X 10.7.5.

Based on tests with archived build on OS X 10.7.5:
- not reproduced with r12393
- reproduced with r12395 and later revisions
the regression was likely introduced in r12394:
<http://bazaar.launchpad.net/~inkscape.dev/inkscape/trunk/revision/12394>