Use Java 1.6 method to obtain default system SSLContext

git-svn-id: https://svn.apache.org/repos/asf/httpcomponents/httpclient/trunk@1561331 13f79535-47bb-0310-9956-ffa450edef68

httpclient/src/main/java/org/apache/http/conn/ssl/SSLContexts.java

@@ -72,7 +72,7 @@ public class SSLContexts {
      */
     public static SSLContext createSystemDefault() throws SSLInitializationException {
         try {
-            return SSLContext.getInstance("Default");
+            return SSLContext.getDefault();
         } catch (final NoSuchAlgorithmException ex) {
             return createDefault();
         }