Issue 4231 - Fix unstable FilterEngineTest.testSetRemoveFilterChangeCallback

libadblockplus-android/jni/JniJsEngine.cpp

 /*
  * This file is part of Adblock Plus <https://adblockplus.org/>,
  * Copyright (C) 2006-2017 eyeo GmbH
  *
  * Adblock Plus is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 3 as
  * published by the Free Software Foundation.
  *
  * Adblock Plus is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 124 matching lines @@
   }
   CATCH_AND_THROW(env)
 }
 
 static void JNICALL JniSetFileSystem(JNIEnv* env, jclass clazz, jlong ptr, jlong fileSystemPtr)
 {
   AdblockPlus::JsEnginePtr& engine = *JniLongToTypePtr<AdblockPlus::JsEnginePtr>(ptr);
 
   try
   {
-    AdblockPlus::FileSystemPtr fileSystem(JniLongToTypePtr<JniFileSystemCallback>(fileSystemPtr));
-
+    AdblockPlus::FileSystemPtr fileSystem = *JniLongToTypePtr<AdblockPlus::FileSystemPtr>(fileSystemPtr);
     engine->SetFileSystem(fileSystem);
   }
   CATCH_AND_THROW(env)
 }
 
 static void JNICALL JniSetDefaultWebRequest(JNIEnv* env, jclass clazz, jlong ptr)
 {
   AdblockPlus::JsEnginePtr& engine = *JniLongToTypePtr<AdblockPlus::JsEnginePtr>(ptr);
 
   try
@@ skipping 107 matching lines @@
 
   { (char*)"newValue", (char*)"(JJ)" TYP("JsValue"), (void*)JniNewLongValue },
   { (char*)"newValue", (char*)"(JZ)" TYP("JsValue"), (void*)JniNewBooleanValue },
   { (char*)"newValue", (char*)"(JLjava/lang/String;)" TYP("JsValue"), (void*)JniNewStringValue }
 };
 
 extern "C" JNIEXPORT void JNICALL Java_org_adblockplus_libadblockplus_JsEngine_registerNatives(JNIEnv *env, jclass clazz)
 {
   env->RegisterNatives(clazz, methods, sizeof(methods) / sizeof(methods[0]));
 }