use-of-uninitialized-value in skip_trailing_space

SET SESSION collation_connection=utf16_persian_ci;

SET @@default_master_connection='a';

SHOW REPLICA STATUS;

Version: '10.11.18-MariaDB-debug-log'  socket: '/test/MSAN_MD250526-mariadb-10.11.18-linux-x86_64-dbg/mysql-test/var/tmp/mysqld.1.sock'  port: 19000  Source distribution

==1196953==WARNING: MemorySanitizer: use-of-uninitialized-value

    #0 0x5555580e0088 in skip_trailing_space /test/10.11/strings/strings_def.h:102:3

    #1 0x5555580e0088 in my_hash_sort_utf8mb3 /test/10.11/strings/ctype-utf8.c:722:19

    #2 0x555557f66115 in my_ci_hash_sort /test/10.11/include/m_ctype.h:1354:3

    #3 0x555557f66115 in my_hash_sort /test/10.11/mysys/hash.c:48:3

    #4 0x555557f669f2 in my_hash_first /test/10.11/mysys/hash.c:264:38

    #5 0x555557f669f2 in my_hash_search /test/10.11/mysys/hash.c:236:10

    #6 0x5555566ab965 in Master_info_index::get_master_info(st_mysql_const_lex_string const*, Sql_state_errno_level::enum_warning_level) /test/10.11/sql/rpl_mi.cc:1385:22

    #7 0x5555566ac3dc in get_master_info(st_mysql_const_lex_string const*, Sql_state_errno_level::enum_warning_level) /test/10.11/sql/rpl_mi.cc:1330:31

    #8 0x555555f40601 in Sql_cmd_show_slave_status::execute(THD*) /test/10.11/sql/slave.cc:1660:14

    #9 0x555556210a96 in mysql_execute_command(THD*, bool) /test/10.11/sql/sql_parse.cc:6199:26

    #10 0x5555561fe606 in mysql_parse(THD*, char*, unsigned int, Parser_state*) /test/10.11/sql/sql_parse.cc:8221:18

    #11 0x5555561f6f3f in dispatch_command(enum_server_command, THD*, char*, unsigned int, bool) /test/10.11/sql/sql_parse.cc:1924:7

    #12 0x5555561ffbd3 in do_command(THD*, bool) /test/10.11/sql/sql_parse.cc:1434:17

    #13 0x5555566c287c in do_handle_one_connection(CONNECT*, bool) /test/10.11/sql/sql_connect.cc:1475:11

    #14 0x5555566c2335 in handle_one_connection /test/10.11/sql/sql_connect.cc:1387:5

    #15 0x5555573974c2 in pfs_spawn_thread /test/10.11/storage/perfschema/pfs.cc:2201:3

    #16 0x7fffe669caa3 in start_thread nptl/pthread_create.c:447:8

    #17 0x7fffe6729c6b in clone3 misc/../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

  Memory was marked as uninitialized

    #0 0x555555dabadd in __msan_allocated_memory (/test/MSAN_MD250526-mariadb-10.11.18-linux-x86_64-dbg/bin/mariadbd+0x857add) (BuildId: 697e53181c54d24002f39226f37eee72fd74b5e1)

    #1 0x555557fcc43d in my_malloc /test/10.11/mysys/my_malloc.c:116:7

SUMMARY: MemorySanitizer: use-of-uninitialized-value /test/10.11/strings/strings_def.h:102:3 in skip_trailing_space

MSAN|use-of-uninitialized-value|strings/strings_def.h|skip_trailing_space|my_hash_sort_utf8mb3|my_ci_hash_sort|my_hash_sort