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Fix some (probably benign) uninitialised members (from coverity scan)2014-09-03, by Chris Cannam
Fix a couple of not-very-realistic potential null-pointer derefs (from coverity scan)2014-09-03, by Chris Cannam
Simplify some logic where loop was used with an unconditional "break" that meant it could only happen once (from coverity scan)2014-09-03, by Chris Cannam

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