Change program_space::ebfd to a gdb_bfd_ref_ptr

This changes program_space::ebfd to a gdb_bfd_ref_ptr, removing some
manual management.

gdb/ChangeLog
2020-10-29  Tom Tromey  <tom@tromey.com>

	* exec.c (exec_file_attach): Update.
	* progspace.c (program_space::exec_close): Update.
	* progspace.h (struct program_space) <ebfd>: Now a
	gdb_bfd_ref_ptr.
	<set_exec_bfd>: Change argument type.
	<exec_bfd>: Update.

1 files changed, 1 insertions, 1 deletions

diff --git a/gdb/exec.c b/gdb/exec.c
index 2c93391..684f4df 100644
--- a/gdb/exec.c
+++ b/gdb/exec.c
@@ -453,7 +453,7 @@ exec_file_attach (const char *filename, int from_tty)
 			      FOPEN_RUB, scratch_chan);
       else
 	temp = gdb_bfd_open (canonical_pathname, gnutarget, scratch_chan);
-      current_program_space->set_exec_bfd (temp.release ());
+      current_program_space->set_exec_bfd (std::move (temp));
 
       if (!current_program_space->exec_bfd ())
 	{