Skip another pixmap comparison test.

Change-Id: Ie9280cfbb74d2ffa2da1ce5b6d1e5153a9b19d0f

tests/auto/declarative/qsganimatedimage/tst_qsganimatedimage.cpp

@@ -173,6 +173,8 @@ void tst_qsganimatedimage::mirror_running()
     QCOMPARE(anim->currentFrame(), 0);  // animation only has 2 frames, should cycle back to first
     QPixmap frame0_flipped = canvas->renderPixmap();
 
+    QSKIP("Skip while QTBUG-19351 and QTBUG-19252 are not resolved", SkipSingle);
+
     QTransform transform;
     transform.translate(width, 0).scale(-1, 1.0);
     QPixmap frame0_expected = frame0.transformed(transform);