fix resource acquisition in hybrid pool with native threads

Author: mariofusco

src/main/java/io/vertx/core/json/jackson/HybridJacksonPool.java

@@ -58,6 +58,14 @@ public BufferRecycler acquirePooled() {
       nativePool.acquirePooled();
   }
 
+  @Override
+  public BufferRecycler acquireAndLinkPooled() {
+    // when using the ThreadLocal based pool it is not necessary to register the BufferRecycler on the pool
+    return isVirtual.test(Thread.currentThread()) ?
+      VirtualPoolHolder.virtualPool.acquireAndLinkPooled() :
+      nativePool.acquirePooled();
+  }
+  
   @Override
   public void releasePooled(BufferRecycler bufferRecycler) {
     if (bufferRecycler instanceof VThreadBufferRecycler) {