remove unused call to zmalloc_size in defrag.c (#8285)
remove unused call to zmalloc_size in defrag.c (#8285)


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