Is it impossible to update ZeroNet with tor=always?

### Step 1: Please describe your environment

* ZeroNet version: 0.6.0 r3097
* Operating system: Arch Linux
* Web browser: Chromium
* Tor status: always
* Opened port: no
* Special configuration: tor = always

### Step 2: Describe the problem:

I want to update ZeroNet without using clearnet. Is it possible?

#### Steps to reproduce:
1. Launch ZeroNet with `tor = always` option;
2. Click on the "New ZeroNet version: 0.6.1";
3. Then click on the "Update and restart ZeroNet".

#### Observed Results:
```
Update site path: /var/lib/zeronet/1UPDatEDxnvHDo7TXvq6AEBARfNkyfxsp, bad_files: 0
/usr/lib/python2.7/site-packages/msgpack/__init__.py:47: FutureWarning: use_bin_type option is not specified. Default value of the option will be changed in future version.
return Packer(**kwargs).pack(o)
[15:22:17] - Redirect to: https://codeload.github.com/HelloZeroNet/ZeroNet/zip/master
Segmentation fault (core dumped)
```
#### Expected Results:

ZeroNet updated to the latest version.