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7bfc9109f7
meta_window_ensure_frame() creates its own grab and has a comment claiming that it must be called under a grab too. But the reasoning given in the comment does not seem relevant here. We only frame non-override-redirect windows, so we are creating the frame in response to MapRequest. There is no way that the child could receive a MapNotify at this point, since that only happens much later, once we go through the CALC_SHOWING queue and call XMapWindow() from meta_window_show(). Remove the unnecessary grab. https://bugzilla.gnome.org/show_bug.cgi?id=721345
