Fixed bug when cancelling bookmark creation.
Fixed bug when cancelling bookmark creation.

It would create a bookmark whose name was None, which would break everything.

hradec/gaffer,lucienfostier/gaffer,davidsminor/gaffer,chippey/gaffer,davidsminor/gaffer,lucienfostier/gaffer,GafferHQ/gaffer,goddardl/gaffer,chippey/gaffer,GafferHQ/gaffer,GafferHQ/gaffer,johnhaddon/gaffer,ivanimanishi/gaffer,goddardl/gaffer,appleseedhq/gaffer,goddardl/gaffer,appleseedhq/gaffer,cedriclaunay/gaffer,hradec/gaffer,andrewkaufman/gaffer,GafferHQ/gaffer,ImageEngine/gaffer,boberfly/gaffer,cedriclaunay/gaffer,johnhaddon/gaffer,chippey/gaffer,johnhaddon/gaffer,lucienfostier/gaffer,johnhaddon/gaffer,goddardl/gaffer,ivanimanishi/gaffer,johnhaddon/gaffer,cedriclaunay/gaffer,boberfly/gaffer,chippey/gaffer,ImageEngine/gaffer,ivanimanishi/gaffer,ivanimanishi/gaffer,andrewkaufman/gaffer,ImageEngine/gaffer,GafferHQ/gaffer,cedriclaunay/gaffer,appleseedhq/gaffer,hradec/gaffer,ImageEngine/gaffer,boberfly/gaffer,hradec/gaffer,boberfly/gaffer,andrewkaufman/gaffer,appleseedhq/gaffer,hradec/gaffer,andrewkaufman/gaffer,andrewkaufman/gaffer,davidsminor/gaffer,davidsminor/gaffer,lucienfostier/gaffer