Remove duplicate dbid lookup in performEvictions. (#9063)
Remove duplicate dbid lookup in performEvictions. (#9063)

Minor code cleanup.
charsyam/redis,soloestoy/redis,soloestoy/redis,yossigo/redis,yossigo/redis,yossigo/redis,ofirluzon/redis,ofirluzon/redis,neomantra/redis,PKRoma/redis,PKRoma/redis,antirez/redis,neomantra/redis,ofirluzon/redis,PKRoma/redis,antirez/redis,charsyam/redis,neomantra/redis,soloestoy/redis,yossigo/redis,charsyam/redis,oranagra/redis,PKRoma/redis,charsyam/redis,antirez/redis,PKRoma/redis,oranagra/redis,ofirluzon/redis,charsyam/redis,yossigo/redis,oranagra/redis,oranagra/redis,neomantra/redis,soloestoy/redis,ofirluzon/redis,oranagra/redis,neomantra/redis,soloestoy/redis,antirez/redis