Fix context menu keybinding reading.
When the keybinding for an action that also appears in the context menu is None, python can't do it's usual string tricks and throws a backtrace, and doesn't display the menu.
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@ -30,6 +30,8 @@ class TerminalPopupMenu(object):
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def get_menu_item_mask(self, maskstr):
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mask = 0
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if maskstr is None:
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return mask
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maskstr = maskstr.lower()
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if maskstr.find('<Shift>'.lower()) >= 0:
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mask = mask | Gdk.ModifierType.SHIFT_MASK
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