Remove a few useless operations from hllCount() fast path.
Remove a few useless operations from hllCount() fast path.

xuzhezhaozhao/redis_reading,MSOpenTech/redis,ksarch-saas/redis,HunanTV/redis,louisliangjun/redis,himoca/redis,darksideofthemoo/redis-histogram,ksarch-saas/redis,MSOpenTech/redis,slfs007/mk-redis,himoca/redis,louisliangjun/redis,ramonsnir/redis,himoca/redis,darksideofthemoo/redis-histogram,Hailei/redis,maodeyi/redis_lua,darksideofthemoo/redis-histogram,darksideofthemoo/redis-histogram,MSOpenTech/redis,Hailei/redis,slfs007/mk-redis,MSOpenTech/redis,ttuna/msot-redis,maodeyi/redis_lua,spearhead-ea/redis,ramonsnir/redis,ksarch-saas/redis,splitice/redis,slfs007/mk-redis,MSOpenTech/redis,ttuna/msot-redis,Hailei/redis,ttuna/msot-redis,splitice/redis,jxwr/redis,splitice/redis,spearhead-ea/redis,ramonsnir/redis,spearhead-ea/redis,xuzhezhaozhao/redis_reading,Hailei/redis,HunanTV/redis,ttuna/msot-redis,louisliangjun/redis,ttuna/msot-redis,xuzhezhaozhao/redis_reading,jxwr/redis,ksarch-saas/redis,jxwr/redis,HunanTV/redis,maodeyi/redis_lua,louisliangjun/redis,splitice/redis,HunanTV/redis,xuzhezhaozhao/redis_reading