Andrew Worsley authored Aug 29, 2015 and Michael Natterer committed Apr 17, 2016

Remove gimp_drawable_mask_bounds() from several plug-ins

Also avoid null pointer crash by returning if called with null
drawable which appears to happen once on the initial update. Instead
prints a message for some one who might want to fix it

Change gimp_drawable_mask_intersect() to check return value

We still get some GIMP Error and Warnings but no crashes now