Fix memory leaks in newly added ZDIFF (#8056)
Fix memory leaks in newly added ZDIFF (#8056)


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