Fix memory leakage in android diag Class

Author: joonhaengHeo

.github/workflows/java-tests.yaml

@@ -260,9 +260,6 @@ jobs:
                      --factoryreset \
                   '
             - name: Run Pairing Onnetwork and get diagnostic log Test
-              # TODO: test below is disabled because it seems flaky (crashes on pool not being empty on app exit)
-              #       See: https://github.com/project-chip/connectedhomeip/issues/36734
-              if: false
               run: |
                   scripts/run_in_python_env.sh out/venv \
                   './scripts/tests/run_java_test.py \

src/controller/java/AndroidLogDownloadFromNode.cpp

@@ -221,18 +221,22 @@ void AndroidLogDownloadFromNode::FinishLogDownloadFromNode(CHIP_ERROR err)
 
         env->CallVoidMethod(mJavaCallback.ObjectRef(), onSuccessMethod, static_cast<jint>(mController->GetFabricIndex()),
                             static_cast<jlong>(mRemoteNodeId));
-        return;
     }
+    else
+    {
+        ChipLogError(Controller, "Log Download Failed : %" CHIP_ERROR_FORMAT, err.Format());
 
-    ChipLogError(Controller, "Log Download Failed : %" CHIP_ERROR_FORMAT, err.Format());
+        jmethodID onErrorMethod;
+        // Java method signature : void onError(int fabricIndex, long nodeId, long errorCode)
+        jniErr = JniReferences::GetInstance().FindMethod(env, mJavaCallback.ObjectRef(), "onError", "(IJJ)V", &onErrorMethod);
+        VerifyOrReturn(jniErr == CHIP_NO_ERROR, ChipLogError(Controller, "Could not find onError method"));
 
-    jmethodID onErrorMethod;
-    // Java method signature : void onError(int fabricIndex, long nodeId, long errorCode)
-    jniErr = JniReferences::GetInstance().FindMethod(env, mJavaCallback.ObjectRef(), "onError", "(IJJ)V", &onErrorMethod);
-    VerifyOrReturn(jniErr == CHIP_NO_ERROR, ChipLogError(Controller, "Could not find onError method"));
+        env->CallVoidMethod(mJavaCallback.ObjectRef(), onErrorMethod, static_cast<jint>(mController->GetFabricIndex()),
+                            static_cast<jlong>(mRemoteNodeId), static_cast<jlong>(err.AsInteger()));
+    }
 
-    env->CallVoidMethod(mJavaCallback.ObjectRef(), onErrorMethod, static_cast<jint>(mController->GetFabricIndex()),
-                        static_cast<jlong>(mRemoteNodeId), static_cast<jlong>(err.AsInteger()));
+    // Finish this function, this object will be deleted.
+    delete this;
 }
 
 void AndroidLogDownloadFromNode::OnBdxTransferCallback(void * context, FabricIndex fabricIndex, NodeId remoteNodeId,