tst_qpixmap test case failed on Symbian and Windows platforms with Qt 4.7

tests/auto/qpixmap test is failed for Qt 4.7.2 on Symbian^3 devices.

Two failures:
00:31:04.317 [QTestLib] FAIL! : tst_QPixmap::mask() 'pm.mask().isNull()' returned FALSE. () Loc: [K:\sf\mw\qt\tests\auto\qpixmap\tst_qpixmap.cpp(637)]
00:31:06.928 [QTestLib] FAIL! : tst_QPixmap::toImageDeepCopy() 'first != second' returned FALSE. () Loc: [K:\sf\mw\qt\tests\auto\qpixmap\tst_qpixmap.cpp(1767)]

tst_QPixmap::mask() 'pm.mask().isNull()' returned FALSE. ()
is also reproduced on Qt 4.6.3 release.
Obviously this part should be changed according comments from the code:
// hw: todo: this will fail if the default pixmap format is
// argb32_premultiplied. The mask will be all 1's

Second fail tst_QPixmap::toImageDeepCopy() 'first != second' returned FALSE
also is reproduced on Windows platform.