Fix invalid alignment value for _aligned_malloc in Windows

[joselopeqti]

The Device Maximum Alignment is set up to zero when using the USM wrapper to allocate a System type allocation.
This value is used for the alignment param in the _aligned_malloc function if the test is run on Windows. In this case, alignment must be a power of 2 _aligned_malloc :

If alignment isn't a power of 2 or size is zero, this function invokes the invalid parameter handler, as described in Parameter validation.