Merge branch 'fill-use-after-free' into 'master'

Avoid use after free in cairo_fill

See merge request !116
7 jobs for master in 26 minutes and 12 seconds (queued for 1 second)
Status Job ID Name Coverage
  Prep
passed #6824415
fedora image

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  Test
passed #6824416
fedora autotools build

00:25:33

passed #6824417
fedora meson build

00:00:27

passed #6824420
meson android arm64 fedora

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passed #6824421
gst-macos-10.15
meson macOS

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passed #6824418
docker windows 1809
meson vs2017 amd64

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passed #6824419
docker windows 1809
meson vs2017 x86

00:02:59