recipes: libpng: update to 1.6.37
Fixes a use-after-free bug in the simplified libpng API png_image_free(), which has been assigned ID CVE-2019-7317. (GStreamer does not appear to use this API though.)
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Fixes a use-after-free bug in the simplified libpng API png_image_free(), which has been assigned ID CVE-2019-7317. (GStreamer does not appear to use this API though.)