[Seaside] [Bug][Fix] WADateSelector

[Benoit St-Jean]

Why not, more simply:

privateIsValidDay: theDay monthNumber: theMonth
year: theYear
    | maxDay |
    (theMonth between: 1 and: 12) ifFalse: [^false].
    maxDay := Month daysInMonth: theMonth forYear:
theYear.
    ^theDay > 0 & (theDay <= maxDay)


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Benoit St-Jean
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