reverted an optimization that makes Redis not stable

redis.c

@@ -1005,9 +1005,11 @@ static int dictEncObjKeyCompare(void *privdata, const void *key1,
     robj *o1 = (robj*) key1, *o2 = (robj*) key2;
     int cmp;
 
+#if 0
     if (o1->encoding == REDIS_ENCODING_INT &&
         o2->encoding == REDIS_ENCODING_INT &&
         o1->ptr == o2->ptr) return 0;
+#endif
 
     o1 = getDecodedObject(o1);
     o2 = getDecodedObject(o2);

test-redis.tcl

@@ -1763,7 +1763,6 @@ proc main {server port} {
                 set rank [$r zrank myzset $ele]
                 if {$rank != $index} {
                     set err "$ele RANK is wrong! ($rank != $index)"
-                    exit
                     break
                 }
             }