Don't wrongly detect fonts as oblique

We were interpreting bit #8 as the oblique bit, but this is the
WWS-conformity bit. Bit #10 is the oblique bit.

[ChangeLog][Windows] Fixed an issue where loading fonts from files or data
would sometimes mistakenly classify them as oblique.

Fixes: QTBUG-73660
Change-Id: Id9e5012d1b89d0bee0e966c5105657b38834e13a
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
Reviewed-by: Konstantin Ritt <ritt.ks@gmail.com>

src/platformsupport/fontdatabases/windows/qwindowsfontdatabase.cpp

@@ -1429,8 +1429,8 @@ QT_WARNING_POP
                     reinterpret_cast<const OS2Table *>(fontData.constData()
                                                        + qFromBigEndian<quint32>(os2TableEntry->offset));
 
-            bool italic = qFromBigEndian<quint16>(os2Table->selection) & 1;
-            bool oblique = qFromBigEndian<quint16>(os2Table->selection) & 128;
+            bool italic = qFromBigEndian<quint16>(os2Table->selection)  & (1 << 0);
+            bool oblique = qFromBigEndian<quint16>(os2Table->selection) & (1 << 9);
 
             if (italic)
                 fontEngine->fontDef.style = QFont::StyleItalic;