fixed race condition in fast_scan that only occured with > 1M char values
fixed race condition in fast_scan that only occured with > 1M char values

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