core/org.openjdk.jmc.agent/src/main/java/org/openjdk/jmc/agent/Transformer.java

*** 60,70 ****
          @Override
          public byte[] transform(
                  ClassLoader loader, String className, Class<?> classBeingRedefined, ProtectionDomain protectionDomain,
                  byte[] classfileBuffer) throws IllegalClassFormatException {
                  if (!registry.hasPendingTransforms(className)) {
!                         return classfileBuffer;
                  }
                  return doTransforms(registry.getTransformData(className), classfileBuffer, loader, protectionDomain);
          }
  
          private byte[] doTransforms(
--- 60,70 ----
          @Override
          public byte[] transform(
                  ClassLoader loader, String className, Class<?> classBeingRedefined, ProtectionDomain protectionDomain,
                  byte[] classfileBuffer) throws IllegalClassFormatException {
                  if (!registry.hasPendingTransforms(className)) {
!                         return null;
                  }
                  return doTransforms(registry.getTransformData(className), classfileBuffer, loader, protectionDomain);
          }
  
          private byte[] doTransforms(