Backport of "meson: Don't try to find gio-unix on Windows" into 1.16
requested to merge tpm/gst-plugins-base:backport-mr-235-into-1.16-remove-gio-unix-on-windows into 1.16
Backport of !235 (merged) "meson: Don't try to find gio-unix on Windows".
Commits:
- ad9d81d3 meson: Don't try to find gio-unix on Windows