Updating test results in rocksdb test suite after MDEV-11172 is fixed

storage/rocksdb/mysql-test/rocksdb/r/issue896.result

@@ -9,7 +9,7 @@ KEY `d` (`d`)
 INSERT INTO t1 VALUES (100, 'aaabbb', UNIX_TIMESTAMP(), 200);
 EXPLAIN SELECT COUNT(*) FROM t1 FORCE INDEX(d);
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	index	NULL	d	11	NULL	#	Using index
+1	SIMPLE	t1	index	NULL	d	9	NULL	#	Using index
 # segfault here without the fix
 SELECT COUNT(*) FROM t1 FORCE INDEX(d);
 COUNT(*)

storage/rocksdb/mysql-test/rocksdb/r/rocksdb.result

@@ -546,7 +546,7 @@ pk	key1	col1
 explain
 select key1 from t30;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t30	index	NULL	key1	20	NULL	#	Using index
+1	SIMPLE	t30	index	NULL	key1	18	NULL	#	Using index
 select key1 from t30;
 key1
 row1-key
@@ -618,7 +618,7 @@ row3	row3-key	row3-data
 explain 
 select * from t30 order by key1 limit 3;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t30	index	NULL	key1	20	NULL	#	
+1	SIMPLE	t30	index	NULL	key1	18	NULL	#	
 select * from t30 order by key1 limit 3;
 pk	key1	col1
 row1	row1-key	row1-data
@@ -627,7 +627,7 @@ row3	row3-key	row3-data
 explain 
 select * from t30 order by key1 desc limit 3;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t30	index	NULL	key1	20	NULL	#	
+1	SIMPLE	t30	index	NULL	key1	18	NULL	#	
 select * from t30 order by key1 desc limit 3;
 pk	key1	col1
 row5	row5-key	row5-data

storage/rocksdb/mysql-test/rocksdb/r/type_char_indexes.result

@@ -45,7 +45,7 @@ t1	1	v16	1	v16	A	500	NULL	NULL	YES	LSMTREE
 INSERT INTO t1 (c,c20,v16,v128,pk) VALUES ('a','char1','varchar1a','varchar1b','1'),('a','char2','varchar2a','varchar2b','2'),('b','char3','varchar1a','varchar1b','3'),('c','char4','varchar3a','varchar3b','4');
 EXPLAIN SELECT SUBSTRING(v16,0,3) FROM t1 WHERE v16 LIKE 'varchar%';
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	index	v16	v16	21	NULL	#	Using where; Using index
+1	SIMPLE	t1	index	v16	v16	19	NULL	#	Using where; Using index
 SELECT SUBSTRING(v16,7,3) FROM t1 WHERE v16 LIKE 'varchar%';
 SUBSTRING(v16,7,3)
 r1a