Fix math/tst-CMPLX.c

[Marek Polacek]

On 02/07/2012 01:14 AM, Joseph S. Myers wrote:
> Yes, this looks good assuming it's been tested with 4.7.  I think adding a 
> new test is better than putting more in the existing one.

Yes, I've tested it using GCC 4.7.0 20120125.  I'll commit shortly.  Thanks,

	Marek