Update DJsonb.java

Author: SentryMan

jsonb/src/main/java/io/avaje/jsonb/core/DJsonb.java

@@ -228,7 +228,7 @@ static final class DBuilder implements Jsonb.Builder {
     private boolean serializeNulls;
     private boolean serializeEmpty = true;
     private JsonStreamAdapter adapter;
-    private final BufferRecycleStrategy strategy = BufferRecycleStrategy.HYBRID_POOL;
+    private BufferRecycleStrategy strategy = BufferRecycleStrategy.HYBRID_POOL;
 
     @Override
     public Builder serializeNulls(boolean serializeNulls) {
@@ -256,7 +256,7 @@ public Builder mathTypesAsString(boolean mathTypesAsString) {
 
     @Override
     public Builder bufferRecycling(BufferRecycleStrategy strategy) {
-      bufferRecycling(strategy);
+      this.strategy=strategy;
       return this;
     }