8290005: com/sun/jndi/ldap/LdapCBPropertiesTest.java failling with Nu…

…llPointerException

Reviewed-by: jnimeh, xuelei

src/java.base/share/classes/sun/security/ssl/SSLSocketImpl.java

@@ -650,8 +650,10 @@ private void duplexCloseOutput() throws IOException {
             // Use user_canceled alert regardless the protocol versions.
             useUserCanceled = true;
 
-            // The protocol version may have been negotiated.
-            ProtocolVersion pv = conContext.handshakeContext.negotiatedProtocol;
+            // The protocol version may have been negotiated.  The
+            // conContext.handshakeContext.negotiatedProtocol is not used as there
+            // may be a race to set it to null.
+            ProtocolVersion pv = conContext.protocolVersion;
             if (pv == null || (!pv.useTLS13PlusSpec())) {
                 hasCloseReceipt = true;
             }
@@ -1386,7 +1388,6 @@ public String getHandshakeApplicationProtocol() {
         } finally {
             socketLock.unlock();
         }
-
         return null;
     }