MDEV-19867: postfix - syntax spelling ALTER TABLE

Fixes: 5c5ea59b

client/mysqldump.c

@@ -4407,7 +4407,7 @@ static void dump_table(const char *table, const char *db, const uchar *hash_key,
     if (!opt_xml && opt_copy_s3_tables && (ignore_flag & IGNORE_S3_TABLE))
     {
       DYNAMIC_STRING alter_string;
-      init_dynamic_string_checked(&alter_string, "ATER TABLE ", 1024, 1024);
+      init_dynamic_string_checked(&alter_string, "ALTER TABLE ", 1024, 1024);
       dynstr_append_checked(&alter_string, opt_quoted_table);
       dynstr_append_checked(&alter_string, " ENGINE=S3;\n");
       fputs(alter_string.str, md_result_file);

mysql-test/suite/s3/mysqldump.result

@@ -24,7 +24,7 @@ CREATE TABLE `t1` (
 ) ENGINE=Aria DEFAULT CHARSET=latin1 PAGE_CHECKSUM=1;
 /*!40101 SET character_set_client = @saved_cs_client */;
 INSERT INTO `t1` VALUES (1,1),(2,2),(3,3),(4,4);
-ATER TABLE `t1` ENGINE=S3;
+ALTER TABLE `t1` ENGINE=S3;
 #####
 # mysqldump with --copy-s3-tables=1 XML
 ###