MDEV-24754 Crash in ha_partition_inplace_ctx::~ha_partition_inplace_ctx()

ha_innobase::commit_inplace_alter_table(): Fix a regression that was
introduced in 6d1f1b61 (MDEV-24564).

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

@@ -8,3 +8,11 @@ PARTITION BY RANGE(a)
 PARTITION pb VALUES LESS THAN (4));
 ERROR HY000: Partitioned tables do not support FOREIGN KEY
 DROP TABLE t1;
+#
+# MDEV-24754 Server crash in
+# ha_partition_inplace_ctx::~ha_partition_inplace_ctx
+#
+CREATE TABLE t1 (id INT PRIMARY KEY, a INT, va INT AS (a) VIRTUAL)
+ENGINE=InnoDB PARTITION BY HASH(id) PARTITIONS 2;
+ALTER TABLE t1 ADD b INT, ALGORITHM=INSTANT;
+DROP TABLE t1;

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

@@ -13,3 +13,12 @@ PARTITION BY RANGE(a)
 PARTITION pb VALUES LESS THAN (4));
 
 DROP TABLE t1;
+
+--echo #
+--echo # MDEV-24754 Server crash in
+--echo # ha_partition_inplace_ctx::~ha_partition_inplace_ctx
+--echo #
+CREATE TABLE t1 (id INT PRIMARY KEY, a INT, va INT AS (a) VIRTUAL)
+ENGINE=InnoDB PARTITION BY HASH(id) PARTITIONS 2;
+ALTER TABLE t1 ADD b INT, ALGORITHM=INSTANT;
+DROP TABLE t1;

storage/innobase/handler/handler0alter.cc

@@ -11271,7 +11271,7 @@ ha_innobase::commit_inplace_alter_table(
 			auto ctx= static_cast<ha_innobase_inplace_ctx*>(*pctx);
 			ctx->prebuilt->table = innobase_reload_table(
 				m_user_thd, ctx->prebuilt->table,
-				table->s->table_name, *ctx0);
+				table->s->table_name, *ctx);
 			innobase_copy_frm_flags_from_table_share(
 				ctx->prebuilt->table, altered_table->s);
 		}