fix: ensure the fix works on Linux

Author: wu-vincent

src/endstone/runtime/CMakeLists.txt

@@ -58,7 +58,7 @@ if (UNIX)
     find_package(libelf REQUIRED)
     target_link_libraries(endstone_runtime PRIVATE libelf::libelf)
     target_link_options(endstone_runtime PRIVATE -g -Wl,--no-undefined,--exclude-libs,ALL)
-    target_compile_options(endstone_runtime PRIVATE -O2 -DNDEBUG -g -fvisibility=hidden -fms-extensions)
+    target_compile_options(endstone_runtime PRIVATE -O2 -DNDEBUG -g -fvisibility=hidden -fms-extensions -fno-delete-null-pointer-checks)
     if (ENDSTONE_SEPARATE_DEBUG_INFO)
         add_custom_command(
                 TARGET endstone_runtime

src/endstone/runtime/bedrock_hooks/certificate.cpp

@@ -36,10 +36,17 @@ UnverifiedCertificate UnverifiedCertificate::fromString(const std::string &input
     return {WebToken(), nullptr};
 }
 
+namespace {
+template <typename T>
+bool validate_ptr(T *ptr)
+{
+    return ptr != nullptr;
+}
+}  // namespace
+
 bool Certificate::validate(std::time_t current_time, bool is_self_signed, bool check_expired)
 {
-    auto* self = std::launder(this);
-    if (self == nullptr) {
+    if (std::launder(this) == nullptr) {
         return false;
     }
     return ENDSTONE_HOOK_CALL_ORIGINAL(&Certificate::validate, this, current_time, is_self_signed, check_expired);