[patch] Fix SSE2 mag()

[Jules Bergmann]

The mag mask had the wrong width for each element (24 bits instead of 
32).  This was causing coverage_unary to fail.

Not sure why this wasn't showing up with buildbot.  Perhaps the buildbot 
configs are not using --enable-simd-loop-fusion?  Also, this wouldn't 
have shown up when IPP was enabled because IPP mag takes precendence of 
SIMD loop fusion.

Patch applied to trunk and branches/1.4.

			-- Jules

-- 
Jules Bergmann
CodeSourcery
jules at codesourcery.com
(650) 331-3385 x705
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