meson: Flush stdout in testwrap
Otherwise the progress won't reliably be displayed during a test.
Reviewed-by: Noah Misch <noah(at)leadboat(dot)com>
Discussion: https://postgr.es/m/kx6xu7suexal5vwsxpy7ybgkcznx6hgywbuhkr6qabcwxjqax2@i4pcpk75jvaa
Backpatch-through: 16
Branch
------
REL_16_STABLE
Details
-------
https://git.postgresql.org/pg/commitdiff/d9bc60705274b27eab68604b9458431100c871b3
Modified Files
--------------
src/tools/testwrap | 1 +
1 file changed, 1 insertion(+)