[cairo] [PATCH] Hang when recursing in _cairo_scaled_font_reset_cache()

[Hans Petter Jansson]

Hi! I submitted a patch in bug 93891 [1] some time ago, and I wonder if
someone on this list had a few spare moments to review it.

The patch fixes a potential hang affecting client applications (observed
with Evince).

I'm attaching the same patch here for convenience.

[1] https://bugs.freedesktop.org/show_bug.cgi?id=93891

-- 
Hans Petter
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