SCAN is a random command and does not require output sorting.

Sorting the output helps when we want to turn a non-deterministic into a
deterministic command, in that case this is not possible.

src/redis.c

@@ -207,7 +207,7 @@ struct redisCommand redisCommandTable[] = {
     {"pexpire",pexpireCommand,3,"w",0,NULL,1,1,1,0,0},
     {"pexpireat",pexpireatCommand,3,"w",0,NULL,1,1,1,0,0},
     {"keys",keysCommand,2,"rS",0,NULL,0,0,0,0,0},
-    {"scan",scanCommand,-2,"RS",0,NULL,0,0,0,0,0},
+    {"scan",scanCommand,-2,"rR",0,NULL,0,0,0,0,0},
     {"dbsize",dbsizeCommand,1,"r",0,NULL,0,0,0,0,0},
     {"auth",authCommand,2,"rslt",0,NULL,0,0,0,0,0},
     {"ping",pingCommand,1,"rt",0,NULL,0,0,0,0,0},