fixed typo in static_assert.h
fixed typo in static_assert.h

--HG--
extra : convert_revision : svn%3A83215879-3e5a-4751-8c9d-778f44bb06a5/trunk%40887

xiongzhanblake/thrust_src,raygit/thrust,arnabgho/thrust,arnabgho/thrust,thrust/thrust,andrewcorrigan/thrust-multi-permutation-iterator,thvasilo/thrust,mohamed-ali/thrust,marksantos/thrust,thrust/thrust,zhenglaizhang/thrust,sdalton1/thrust,raygit/thrust,dachziegel/thrust,marksantos/thrust,Ricardo666666/thrust,zeryx/thrust,zeryx/thrust,mohamed-ali/thrust,jaredhoberock/thrust,thrust/thrust,sdalton1/thrust,GrimDerp/thrust,GrimDerp/thrust,zeryx/thrust,dachziegel/thrust,sdalton1/thrust,GrimDerp/thrust,thvasilo/thrust,thrust/thrust,jaredhoberock/thrust,zhenglaizhang/thrust,xiongzhanblake/thrust,dachziegel/thrust,raygit/thrust,arnabgho/thrust,sarvex/thrust,zhenglaizhang/thrust,xiongzhanblake/thrust_src,andrewcorrigan/thrust-multi-permutation-iterator,mohamed-ali/thrust,egaburov/thrust,sarvex/thrust,jaredhoberock/thrust,xiongzhanblake/thrust_src,Ricardo666666/thrust,marksantos/thrust,xiongzhanblake/thrust,xiongzhanblake/thrust,thvasilo/thrust,egaburov/thrust,jaredhoberock/thrust,thrust/thrust,jaredhoberock/thrust,sarvex/thrust,Ricardo666666/thrust,egaburov/thrust,andrewcorrigan/thrust-multi-permutation-iterator