Add right vcredist to winrt package

This fixes a regression introduced in 9c0e71a0286: Although the Qt
package is 64 bit, Qt Creator is still 32 bit, and therefore need
the 32 bit vcredist.

Task-number: QTBUG-42739
Change-Id: Iacd793f5280107f2bee9d88feb68fc7788841605
Reviewed-by: Iikka Eklund <iikka.eklund@theqtcompany.com>