Test: handle new osx 'leaks' error.
Test: handle new osx 'leaks' error.

Sometimes the process is still there but no longer in a state that can
be checked (after being killed). This used to happen after a call to
SHUTDOWN NOSAVE in the scripting unit, causing a false positive.

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