[PATCH] _dl_map_object_from_fd: Remove unnecessary debugger notification in error path

[Florian Weimer]

* Andreas Schwab via Libc-alpha:

> After commit ed3ce71f5c ("elf: Move la_activity (LA_ACT_ADD) after
> _dl_add_to_namespace_list() (BZ #28062)") it is no longer necessary to
> reset the debugger state in the error case, since the debugger
> notification only happens after no more errors can occur.

This cleanup looks good to me.  Thanks.