Get rid of code hanging if there is empty page with next page attribute

Author: dssysolyatin

core/src/main/java/com/datastax/dse/driver/internal/core/cql/reactive/ReactiveResultSetSubscription.java

@@ -277,13 +277,8 @@ private Object tryNext() {
         if (pages.poll() == null) {
           throw new AssertionError("Queue is empty, this should not happen");
         }
-        current = pages.peek();
-        // if the next page is readily available,
-        // serve its first row now, no need to wait
-        // for the next drain.
-        if (current != null && current.hasMoreRows()) {
-          return current.nextRow();
-        }
+
+        tryNext();
       }
     }
     // No items available right now.