Process.execute on macOS leaves a background thread spinning at 100%

[vzsg]

In particular, these lines are spinning uncontrollably after the child process exited.

Xcode's memory debugger revealed that the file handle and related objects are kept in memory by the autorelease pool – and explicitly wrapping the Process.execute call with @autoreleasepool resolved the issue.

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Process.asyncExecute doesn't seem to have this issue, and I have not tested anything on Linux.

[tanner0101]

#170 changes macOS and Linux to using the same code. Seems like that will fix this issue. If you have code that was known to recreate the issue, I can add to a test to verify that it no longer does.

[vzsg]

I'll check if I still have it, thanks.