QEventDispatcherWinRT::registerTimer integer overflow of interval variable

A timer with an interval longer than INT_MAX/10000 is not fired correctly.

In https://github.com/qtproject/qtbase/blob/dev/src/corelib/kernel/qeventdispatcher_winrt.cpp line 291 (QEventDispatcherWinRT::registerTimer):
period.Duration = interval ? (interval * 10000) : 1;

interval is of type int (32 bit)
period.Duration is of type int64 (64bit)

If interval is larger than INT_MAX/10000, an integer overflow occur.

Solution: convert to 64bit before multiplication

replace line 291:
period.Duration = interval ? (interval * 10000) : 1;

with

if (interval) {
  period.Duration = interval;
  period.Duration *= 10000; // TimeSpan is based on 100-nanosecond units
} else {
   period.Duration = 1;
}