zeroconf: suppress traceback during shutdown
If the read thred is in select when the main thread is in close, the main
thread may close the socket between select and read, generating a noisy
traceback. This can be ignored if the shutdown flag is set.
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? file1.orig
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1 files updated, 0 files merged, 0 files removed, 0 files unresolved
? file1.orig
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1 files updated, 0 files merged, 0 files removed, 0 files unresolved
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
? file1.orig
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? file1.orig
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? file1.orig
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0 files updated, 0 files merged, 0 files removed, 0 files unresolved
? file1.orig
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