Fix invalid use of sdsZmallocSize on an embedded string
Fix invalid use of sdsZmallocSize on an embedded string

sdsZmallocSize assumes a dynamically allocated SDS. When given a string
object created by createEmbeddedStringObject, it calls zmalloc_size on a
pointer that isn't the one returned by zmalloc

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