Revise per feedback

jkeenan · atoomic · commit 6ef4979f7b78 · 2020-09-16T09:33:33.000-06:00
diff --git a/t/op/taint.t b/t/op/taint.t
@@ -1564,8 +1564,8 @@ SKIP: {
             warn "# shmget failed: $!\n";
         }
 
-        skip "SysV shared memory operation failed", 1 unless 
-          ($rcvd // '') eq $sent;
+        skip "SysV shared memory operation failed", 1
+            unless defined $rcvd and $rcvd eq $sent;
 
         is_tainted($rcvd, "shmread");
     }

Original file line number	Diff line number	Diff line change
`@@ -1564,8 +1564,8 @@ SKIP: {`
`1564`	`1564`	`warn "# shmget failed: $!\n";`
`1565`	`1565`	`}`
`1566`	`1566`
`1567`		`- skip "SysV shared memory operation failed", 1 unless`
`1568`		`- ($rcvd // '') eq $sent;`
	`1567`	`+ skip "SysV shared memory operation failed", 1`
	`1568`	`+ unless defined $rcvd and $rcvd eq $sent;`
`1569`	`1569`
`1570`	`1570`	`is_tainted($rcvd, "shmread");`
`1571`	`1571`	`}`