just return an already created SC instead of bailing out

FROGGS · FROGGS · commit 6d4ea16d950d · 2014-07-18T14:45:03.000+02:00
diff --git a/src/vm/jvm/runtime/org/perl6/nqp/runtime/Ops.java b/src/vm/jvm/runtime/org/perl6/nqp/runtime/Ops.java
@@ -3699,7 +3699,7 @@ public static String sha1(String str) throws NoSuchAlgorithmException, Unsupport
     }
     public static SixModelObject createsc(String handle, ThreadContext tc) {
         if (tc.gc.scs.containsKey(handle))
-            throw ExceptionHandling.dieInternal(tc, "SC with handle " + handle + " already exists");
+            return tc.gc.scRefs.get(handle);
         
         SerializationContext sc = new SerializationContext(handle);
         tc.gc.scs.put(handle, sc);

Original file line number	Diff line number	Diff line change
`@@ -3699,7 +3699,7 @@ public static String sha1(String str) throws NoSuchAlgorithmException, Unsupport`
`3699`	`3699`	`}`
`3700`	`3700`	`public static SixModelObject createsc(String handle, ThreadContext tc) {`
`3701`	`3701`	`if (tc.gc.scs.containsKey(handle))`
`3702`		`- throw ExceptionHandling.dieInternal(tc, "SC with handle " + handle + " already exists");`
	`3702`	`+ return tc.gc.scRefs.get(handle);`
`3703`	`3703`
`3704`	`3704`	`SerializationContext sc = new SerializationContext(handle);`
`3705`	`3705`	`tc.gc.scs.put(handle, sc);`