branches/zip: fix a type in r5935

Should be innodb_open_files, spotted by Michael.

fil/fil0fil.c

@@ -955,7 +955,7 @@ fil_mutex_enter_and_prepare_for_io(
 			" while the maximum\n"
 			"InnoDB: allowed value would be %lu.\n"
 			"InnoDB: You may need to raise the value of"
-			" innobase_open_files in\n"
+			" innodb_open_files in\n"
 			"InnoDB: my.cnf.\n",
 			(ulong) fil_system->n_open,
 			(ulong) fil_system->max_n_open);
@@ -1535,7 +1535,7 @@ fil_open_log_and_system_tablespace_files(void)
 					fprintf(stderr,
 						"InnoDB: Warning: you must"
 						" raise the value of"
-						" innobase_open_files in\n"
+						" innodb_open_files in\n"
 						"InnoDB: my.cnf! Remember that"
 						" InnoDB keeps all log files"
 						" and all system\n"