fixes 16-04-2012

Hello,

here are some fixes.

RepositoryBrowser
- resource leak fixed
- possible crash fixed

BaseView
- usage of a temporary CString object fixed
- possible crash fixed (checking of m_pViewData implies it can be
NULL. SetViewData dereferences it.)

Tooltip
- unnecessary creation of a temporary CString object fixed
- minor efficiency improvement

LinkControl
- intentional fallthrough should be marked

HistoryCombo
- usage of a temporary CString object fixed

EditPropUserState
- probably a missing break. If not, it should be marked as intentional.

SubWCRev
- int32 overflow fixed (overflowed BEFORE converted to __int64 and
then compared to another __int64)

Cheers,
Abel

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