Switch to improved workaround for Dobby detection

.gitmodules

@@ -1,6 +1,9 @@
 [submodule "Dobby"]
 	path = app/src/main/cpp/Dobby
 	url = https://github.com/JingMatrix/Dobby
+[submodule "local_cxa_atexit_finalize_impl"]
+	path = app/src/main/cpp/local_cxa_atexit_finalize_impl
+	url = https://github.com/5ec1cff/local_cxa_atexit_finalize_impl
 [submodule "json"]
 	path = app/src/main/cpp/json
 	url = https://github.com/nlohmann/json

app/src/main/cpp/CMakeLists.txt

@@ -6,7 +6,7 @@ find_package(cxx REQUIRED CONFIG)
 
 link_libraries(cxx::cxx)
 
-add_library(${CMAKE_PROJECT_NAME} SHARED ${CMAKE_SOURCE_DIR}/main.cpp)
+add_library(${CMAKE_PROJECT_NAME} SHARED main.cpp local_cxa_atexit_finalize_impl/atexit.cpp)
 
 add_subdirectory(Dobby)
 

app/src/main/cpp/main.cpp

@@ -388,16 +388,6 @@ static void companion(int fd) {
     jsonVector.clear();
 }
 
-/*
- * Fix for Dobby detections
- * Must be added to all Zygisk C++ libraries in a project
- *
- * Reference: https://github.com/JingMatrix/NeoZygisk/commit/76d54228c7e6fe14cca93338865008946b94f7ee
- */
-extern "C" int __cxa_atexit(void (*func)(void*), void* arg, void* dso) {
-    return 0;
-}
-
 REGISTER_ZYGISK_MODULE(PlayIntegrityFix)
 
 REGISTER_ZYGISK_COMPANION(companion)