ImagePusher: Serializer defined inside ImagePusher class, not in subclasses

image_pusher/ImagePusher.cpp

@@ -13,6 +13,10 @@ void PrepareCBORImage(DataMessage& message,
                                     experiment.GetCompressionAlgorithm());
 }
 
+ImagePusher::ImagePusher()
+: serialization_buffer(MESSAGE_SIZE_FOR_START_END),
+serializer(serialization_buffer.data(), serialization_buffer.size()) {}
+
 std::string ImagePusher::Finalize() {
     return "";
 }