iOS: bugfix function portraitToPrimary()

The old implementation was wrong since it did not use the
screen's height (which was already in primary orientation) to
calculate what the new y value of the target rect (which was in
portrait) should be.

Change-Id: Ie5b2241119e244d099e06d85f69953c1d64979aa
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@digia.com>

src/plugins/platforms/ios/qiosglobal.mm

@@ -142,7 +142,7 @@ QRect fromPortraitToPrimary(const QRect &rect, QPlatformScreen *screen)
     // aligned with UIScreen into whatever is the current orientation of QScreen.
     QRect geometry = screen->geometry();
     return geometry.width() < geometry.height() ? rect
-        : QRect(rect.y(), geometry.width() - rect.width() - rect.x(), rect.height(), rect.width());
+        : QRect(rect.y(), geometry.height() - rect.width() - rect.x(), rect.height(), rect.width());
 }
 
 QT_END_NAMESPACE