Parallel restore checks wrong thread return value?

in spawn_restore:

child = (HANDLE) _beginthreadex(NULL, 0, (void *) parallel_restore,
args, 0, NULL);
if (child == 0)

But from my reading of the docs, _beginthreadex() returns -1 on error, not 0.

Bug, or am I reading it wrong?

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 Magnus Hagander
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