MDEV-24455 Assertion `!m_freed_space' failed in mtr_t::start

In commit 0c23e32 (MDEV-24445)
we forgot to keep m_freed_space in sync with m_freed_pages in one case.

Author: dr-m

mysql-test/suite/innodb/r/innodb-page_compression_tables.result

@@ -55,6 +55,14 @@ innodb_redundant	CREATE TABLE `innodb_redundant` (
   `b` char(200) DEFAULT NULL
 ) ENGINE=InnoDB DEFAULT CHARSET=latin1 ROW_FORMAT=COMPACT `page_compressed`=1
 drop table innodb_redundant;
+#
+# MDEV-24455 Assertion `!m_freed_space' failed in mtr_t::start
+#
+CREATE TABLE t1 (a TEXT, b TEXT) ENGINE=InnoDB PAGE_COMPRESSED='ON';
+BEGIN;
+INSERT INTO t1 VALUES(REPEAT('x',81),REPEAT('x',8034));
+ROLLBACK;
+DROP TABLE t1;
 create procedure innodb_insert_proc (repeat_count int)
 begin
 declare current_num int;

mysql-test/suite/innodb/t/innodb-page_compression_tables.test

@@ -30,6 +30,13 @@ alter table innodb_redundant row_format=compact page_compressed=1;
 show create table innodb_redundant;
 drop table innodb_redundant;
 
+--echo #
+--echo # MDEV-24455 Assertion `!m_freed_space' failed in mtr_t::start
+--echo #
+CREATE TABLE t1 (a TEXT, b TEXT) ENGINE=InnoDB PAGE_COMPRESSED='ON';
+BEGIN; INSERT INTO t1 VALUES(REPEAT('x',81),REPEAT('x',8034)); ROLLBACK;
+DROP TABLE t1;
+
 delimiter //;
 create procedure innodb_insert_proc (repeat_count int)
 begin

storage/innobase/mtr/mtr0mtr.cc

@@ -433,6 +433,7 @@ void mtr_t::commit()
         m_freed_space->clear_freed_ranges();
       delete m_freed_pages;
       m_freed_pages= nullptr;
+      m_freed_space= nullptr;
       /* mtr_t::start() will reset m_trim_pages */
     }
     else