- Use move instead of copy (CID 11722, 12215, 14969, 13035)
 - Check for error return from sysconf.  (CID 12405, 11081)
 - Check return values (CID 10122, 10405)
 - Uninitialized struct field (CID 10095, 10351)
 - Using lock objects as temporaries seems to confuse coverity,
   making it miss seeing the release of the mutex.
   Change to avoid using temporaries.  (CID 12513, 12854, 13396, 14033)
 - Avoid allocating large objects on the stack (CID 10209)
 - Missing lock in test (CID 12617, 11127)