Check world matrix is true when seeing if transformations are supported

If the world matrix is turned off then if the raster paintengine should
not support transformations for the text as otherwise it could end up
being incorrectly transformed.

Task-number: QTBUG-35200
Change-Id: I68fa6654ee87016986ba9d9469673fc8b9e0875e
Reviewed-by: Eskil Abrahamsen Blomfeldt <[email protected]>

Author: Andy Shaw

src/gui/painting/qpaintengine_raster.cpp

@@ -3418,6 +3418,8 @@ void QRasterPaintEngine::releaseDC(HDC) const
 
 bool QRasterPaintEngine::supportsTransformations(const QFontEngine *fontEngine) const
 {
+    if (!state()->WxF)
+        return false;
     const QTransform &m = state()->matrix;
 #if defined(Q_WS_WIN) && !defined(Q_WS_WINCE)
     QFontEngine::Type fontEngineType = fontEngine->type();