shua f1639ba9d5 check null in toplevel_from_popup ...

managed to SEGFAULT the server by trying to create a popup
without setting a parent first.

Not sure if this is dwl or wlroots issue, so also opened a ticket upstream: https://gitlab.freedesktop.org/wlroots/wlroots/-/merge_requests/3811

2022-11-09 00:01:50 -06:00

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