--ControlPortWriteToFile reports port 0 on --ControlPort=auto, not opened port
If I start the latest tor code with `--ControlPort=auto` and `--ControlPortWriteToFile=/path/to/file`, then the contents of the file end up as `PORT=127.0.0.1:0`, which is kind of useless :)
I guess some code got messed up lately that updates the port before writing it out to the control file.
**Trac**:
**Username**: karalabe
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