util: Use CONNECTING_RESULT in RoundRobinLoadBalancer to fix unused variable warning

Author: AgraVator

util/src/main/java/io/grpc/util/RoundRobinLoadBalancer.java

@@ -41,8 +41,8 @@
  * EquivalentAddressGroup}s from the {@link NameResolver}.
  */
 final class RoundRobinLoadBalancer extends MultiChildLoadBalancer {
-  private static final PickResult CONNECTING_RESULT =
-      PickResult.withNoResult("connecting", "round_robin: attempting to connect");
+  private static final PickResult CONNECTING_RESULT = PickResult.withNoResult("connecting",
+      "round_robin connecting: TCP/TLS handshake in progress to child balancers");
   private final AtomicInteger sequence = new AtomicInteger(new Random().nextInt());
   private SubchannelPicker currentPicker = new FixedResultPicker(connectingResult());
 
@@ -51,8 +51,7 @@ public RoundRobinLoadBalancer(Helper helper) {
   }
 
   private PickResult connectingResult() {
-    return PickResult.withNoResult("connecting",
-        "round_robin connecting: TCP/TLS handshake in progress to child balancers");
+    return CONNECTING_RESULT;
   }
 
   /**