COMP: Second time lucky - MS say casting is bad...
COMP: Second time lucky - MS say casting is bad...

According to http://msdn.microsoft.com/en-us/library/b6801kcy.aspx the
correct fix is to use != 0 rather than a cast, and that this is by
design. Hopefully this will silence the compiler and it still clearly
expresses the intent of the operation.

Change-Id: I16e01128217961616bf7d19112cd6aea8a1722b3

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