Test .DESTROY doesn't close standard handles

Rakudo fix: rakudo/rakudo@0e578c4fea
RT#131755: https://rt.perl.org/Ticket/Display.html?id=131755

S32-io/open.t

@@ -3,7 +3,7 @@ use lib <t/spec/packages>;
 use Test;
 use Test::Util;
 
-plan 64;
+plan 65;
 
 my \PATH = 't-S32-io-open.tmp';
 my \PATH-RX = rx/'t-S32-io-open.tmp'/;
@@ -435,4 +435,13 @@ subtest '.open with "-" as path can open closed $*IN/$*OUT' => {
     }, ｢can use unopened handle with path '-'.IO｣;
 }
 
+# RT #131755
+subtest '.DESTROY does not close standard handles' => {
+    plan 3;
+    for $*IN, $*OUT, $*ERR {
+        .DESTROY;
+        is-deeply .opened, True, .perl;
+    }
+}
+
 # vim: ft=perl6