Fix MIGRATE entry in command table.
Fix MIGRATE entry in command table.

Thanks to Oran Agra (@oranagra) for reporting. Key extraction would not
work otherwise and it does not make sense to take wrong data in the
command table.

maodeyi/redis_lua,ramonsnir/redis,louisliangjun/redis,louisliangjun/redis,ramonsnir/redis,louisliangjun/redis,slfs007/mk-redis,splitice/redis,slfs007/mk-redis,maodeyi/redis_lua,splitice/redis,maodeyi/redis_lua,splitice/redis,ramonsnir/redis,splitice/redis,louisliangjun/redis,slfs007/mk-redis