make public list private and removed unused field "references"

Author: mkristian

src/main/java/org/jruby/ext/openssl/x509store/Store.java

@@ -130,8 +130,7 @@ public int call(StoreContext context) {
     CertificateCRLFunction certificateCRL = CertificateCRLFunction.EMPTY;
     CleanupFunction cleanup = CleanupFunction.EMPTY;
 
-    public final List<Object> extraData;
-    public final int references;
+    private final List<Object> extraData;
 
     /**
      * c: X509_STORE_new
@@ -142,7 +141,6 @@ public Store() {
 
         verifyParameter = new VerifyParameter();
 
-        references = 1;
         extraData = new ArrayList<Object>(10);
         this.extraData.add(null); this.extraData.add(null); this.extraData.add(null);
         this.extraData.add(null); this.extraData.add(null); this.extraData.add(null);