pgsql: meson: Flush stdout in testwrap

meson: Flush stdout in testwrap Otherwise the progress won't reliably be displayed during a test. Reviewed-by: Noah Misch Discussion: https://postgr.es/m/kx6xu7suexal5vwsxpy7ybgkcznx6hgywbuhkr6qabcwxjqax2@i4pcpk75jvaa Backpatch-through: 16 Branch -- REL_17_STABLE Details --- https://g

pgsql: meson: Flush stdout in testwrap

meson: Flush stdout in testwrap Otherwise the progress won't reliably be displayed during a test. Reviewed-by: Noah Misch Discussion: https://postgr.es/m/kx6xu7suexal5vwsxpy7ybgkcznx6hgywbuhkr6qabcwxjqax2@i4pcpk75jvaa Backpatch-through: 16 Branch -- master Details --- https://git.post

pgsql: meson: Flush stdout in testwrap

meson: Flush stdout in testwrap Otherwise the progress won't reliably be displayed during a test. Reviewed-by: Noah Misch Discussion: https://postgr.es/m/kx6xu7suexal5vwsxpy7ybgkcznx6hgywbuhkr6qabcwxjqax2@i4pcpk75jvaa Backpatch-through: 16 Branch -- REL_16_STABLE Details --- https://g