8146725: Issues with SignatureAndHashAlgorithm.getSupportedAlgorithms

Reviewed-by: weijun, wetmore

src/share/classes/sun/security/ssl/SignatureAndHashAlgorithm.java

 /*
- * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2010, 2016, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -152,7 +152,6 @@ final class SignatureAndHashAlgorithm {
             getSupportedAlgorithms(AlgorithmConstraints constraints) {
 
         Collection<SignatureAndHashAlgorithm> supported = new ArrayList<>();
-        synchronized (priorityMap) {
         for (SignatureAndHashAlgorithm sigAlg : priorityMap.values()) {
             if (sigAlg.priority <= SUPPORTED_ALG_PRIORITY_MAX_NUM &&
                     constraints.permits(SIGNATURE_PRIMITIVE_SET,
@@ -160,7 +159,6 @@ final class SignatureAndHashAlgorithm {
                 supported.add(sigAlg);
             }
         }
-        }
 
         return supported;
     }