Bugfix on get_pid when p.info["name"] is None

[kdmukai]

• What kind of change does this PR introduce? (Bug fix, feature, docs update, ...)

Bugfix

• What is the current behavior? (You can also link to an open issue here)

On my MacBook I get: `TypeError: argument of type 'NoneType' is not iterable``` whenget_pid` is called.

It seems I have at least one process running whose p.info["name"] gets reported as None.

• What is the new behavior (if this is a feature change)?

Adding a simple check to pass this case.

• Does this PR introduce a breaking change? (What changes might users need to make in their application due to this PR?)

No.

• Other information:

[jonericcook]

Excited to see this fixed!

[kdmukai]

Excited to see this fixed!

If you don't want to wait for the PR to get merged, the changes are super trivial and easy to just manually modify your local copy.