psql/t/001_basic: use locale-aware decimals in new test

As cd82e5c79d14 did.  Otherwise, the test fails in locales that use
decimal separators other than ".".

diff --git a/src/bin/psql/t/001_basic.pl b/src/bin/psql/t/001_basic.pl
index 5398a1dbf3db9ee82ae078ea67766de9edef4d53..89aeec46e553ec3973e0660fadfa075259a10935 100644 (file)
--- a/src/bin/psql/t/001_basic.pl
+++ b/src/bin/psql/t/001_basic.pl
@@ -370,11 +370,11 @@ psql_fails_like(
 
 psql_like(
    $node,
-   q{with x as (
+   sprintf(q{with x as (
        select now()-backend_start AS howlong
        from pg_stat_activity
        where pid = pg_backend_pid()
-     ) select 123 from x where howlong < '2 seconds' \watch i=0.5 m=2},
+     ) select 123 from x where howlong < '2 seconds' \watch i=%g m=2}, 0.5),
    qr/^123$/,
    '\watch, 2 minimum rows');