device/bluetooth: Fix copy constructor of BluetoothServiceAttributeValueBlueZ

device/bluetooth/bluez/bluetooth_service_attribute_value_bluez.cc

Index: device/bluetooth/bluez/bluetooth_service_attribute_value_bluez.cc
diff --git a/device/bluetooth/bluez/bluetooth_service_attribute_value_bluez.cc b/device/bluetooth/bluez/bluetooth_service_attribute_value_bluez.cc
index c66b95332fe3353f5707f0139b34619c3c1e6ee4..e9d61a825018e8574970a589efaeb2b9759f2549 100644
--- a/device/bluetooth/bluez/bluetooth_service_attribute_value_bluez.cc
+++ b/device/bluetooth/bluez/bluetooth_service_attribute_value_bluez.cc
@@ -33,6 +33,11 @@ BluetoothServiceAttributeValueBlueZ::BluetoothServiceAttributeValueBlueZ(
   this->type_ = attribute.type_;
   this->size_ = attribute.size_;
 
+  if (attribute.type_ == NULLTYPE) {
+    this->value_ = base::Value::CreateNullValue();
+    return;
+  }
+
   if (attribute.type_ != SEQUENCE) {
     this->value_ = base::WrapUnique(attribute.value_->DeepCopy());
     return;