Take into account break and continue statements in CheckLeakAutoVar.
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Fixed #4927 (Segfault in CheckOther::checkCommaSeparatedReturn() on invalid code)
Merge pull request #152 from simartin/ticket_4914

Fixed #4914 (memory freed twice, when in do {} while being shortcircuited via continue)
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Fixed #4911 (segfault, assignment in do ... while, 1.61dev)