Comment # 1 on bug 1094148 from QK ZHU

Thanks Xiaoguang for helping me out :)

This issue is caused by the last rebase of gse-sle-classic-ext.patch, the
overrides of margin-bottom was dropped which creates an ugly gap between menu
and its source actor when the PanelMenu's source actor is at the bottom.

fixed by: https://build.opensuse.org/request/show/627247