Make field final and remove unnecessary unboxing in OnSubscribeRedo.RetryWithPredicate

Author: artem-zinnatullin

src/main/java/rx/internal/operators/OnSubscribeRedo.java

@@ -98,7 +98,7 @@ public Notification<?> call(Notification<?> terminalNotification) {
     }
 
     public static final class RetryWithPredicate implements Func1<Observable<? extends Notification<?>>, Observable<? extends Notification<?>>> {
-        private Func2<Integer, Throwable, Boolean> predicate;
+        private final Func2<Integer, Throwable, Boolean> predicate;
 
         public RetryWithPredicate(Func2<Integer, Throwable, Boolean> predicate) {
             this.predicate = predicate;
@@ -111,7 +111,7 @@ public Observable<? extends Notification<?>> call(Observable<? extends Notificat
                 @Override
                 public Notification<Integer> call(Notification<Integer> n, Notification<?> term) {
                     final int value = n.getValue();
-                    if (predicate.call(value, term.getThrowable()).booleanValue())
+                    if (predicate.call(value, term.getThrowable()))
                         return Notification.createOnNext(value + 1);
                     else
                         return (Notification<Integer>) term;