fix memory leak

common/cpp/include/asapo/common/internal/asapo_common_c_glue.h

@@ -30,9 +30,7 @@ template<>
 class AsapoHandlerHolder < std::string>  final : public AsapoHandle {
   public:
     AsapoHandlerHolder(const std::string& handle_i) : handle{new std::string(handle_i)} {};
-    ~AsapoHandlerHolder() override {
-        handle.release();
-    }
+    ~AsapoHandlerHolder() override = default;
     std::unique_ptr<std::string> handle{nullptr};
 };
 //! handle for credentials to access a source from a producer

tests/automatic/consumer/consumer_api/consumer_api.c

@@ -224,8 +224,7 @@ int main(int argc, char* argv[]) {
     EXIT_IF_ERROR("create consumer", err);
 
     AsapoStringHandle group_id2 = asapo_string_from_c_str("hello");
-    printf("%s\n",asapo_string_c_str(group_id2));
-//    ASSERT_EQ_STRING("hello",asapo_string_c_str(group_id2),"asapo str <-> string");
+    ASSERT_EQ_STRING("hello",asapo_string_c_str(group_id2),"asapo str <-> string");
 
 
     asapo_consumer_set_timeout(consumer, 1000ull);