[Bug lto/82757] [8 regression] r251560 causes: plugin needed to handle lto object

[amodra at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82757

--- Comment #7 from Alan Modra <amodra at gmail dot com> ---
> Bump st_name by one for __gnu_lto_

Better make that two.  Some targets will have an extra '_' prefix.