BUG#18779944: MYSQLDUMP BUFFER OVERFLOW

Reverted change due to mtr test failure.

client/mysqldump.c

@@ -5538,27 +5538,11 @@ int main(int argc, char **argv)
       dump_all_tablespaces();
     dump_all_databases();
   }
-  else
-  {
-    // Check all arguments meet length condition. Currently database and table
-    // names are limited to NAME_LEN bytes and stack-based buffers assumes
-    // that escaped name will be not longer than NAME_LEN*2 + 2 bytes long.
-    int argument;
-    for (argument= 0; argument < argc; argument++)
-    {
-      size_t argument_length= strlen(argv[argument]);
-      if (argument_length > NAME_LEN)
-      {
-        die(EX_CONSCHECK, "[ERROR] Argument '%s' is too long, it cannot be "
-          "name for any table or database.\n", argv[argument]);
-      }
-    }
-
-    if (argc > 1 && !opt_databases)
+  else if (argc > 1 && !opt_databases)
   {
     /* Only one database and selected table(s) */
     if (!opt_alltspcs && !opt_notspcs)
-        dump_tablespaces_for_tables(*argv, (argv + 1), (argc - 1));
+      dump_tablespaces_for_tables(*argv, (argv + 1), (argc -1));
     dump_selected_tables(*argv, (argv + 1), (argc - 1));
   }
   else
@@ -5568,7 +5552,6 @@ int main(int argc, char **argv)
       dump_tablespaces_for_databases(argv);
     dump_databases(argv);
   }
-  }
 
   /* if --dump-slave , start the slave sql thread */
   if (opt_slave_data && do_start_slave_sql(mysql))