fix crash in module short read test
fix crash in module short read test

yossigo/redis,soloestoy/redis,PKRoma/redis,PKRoma/redis,neomantra/redis,ofirluzon/redis,soloestoy/redis,ctripcorp/redis,charsyam/redis,soloestoy/redis,PKRoma/redis,oranagra/redis,pmem/redis,oranagra/redis,oranagra/redis,pmem/redis,pmem/redis,neomantra/redis,charsyam/redis,ofirluzon/redis,ctripcorp/redis,ofirluzon/redis,pmem/redis,soloestoy/redis,ctripcorp/redis,charsyam/redis,charsyam/redis,antirez/redis,soloestoy/redis,yossigo/redis,charsyam/redis,neomantra/redis,neomantra/redis,ctripcorp/redis,oranagra/redis,PKRoma/redis,oranagra/redis,yossigo/redis,ofirluzon/redis,neomantra/redis,antirez/redis,antirez/redis,ofirluzon/redis,yossigo/redis,PKRoma/redis,antirez/redis,yossigo/redis