Change objfile_to_objfile_object to return a new reference

This changes objfile_to_objfile_object to return a new references and
fixes up all the uses.

gdb/ChangeLog
2018-09-16  Tom Tromey  <tom@tromey.com>

	* python/py-progspace.c (pspy_get_objfiles): Update.
	* python/python-internal.h (objfile_to_objfile_object): Change
	return type.
	* python/py-newobjfileevent.c (create_new_objfile_event_object):
	Update.
	* python/py-xmethods.c (gdbpy_get_matching_xmethod_workers):
	Update.
	* python/python.c (gdbpy_get_current_objfile): Update.
	(gdbpy_objfiles): Update.
	* python/py-objfile.c (objfpy_get_owner, gdbpy_lookup_objfile):
	Update.
	(objfile_to_objfile_object): Return a new reference.
	* python/py-symtab.c (stpy_get_objfile): Update.
	* python/py-prettyprint.c (find_pretty_printer_from_objfiles):
	Update.

1 files changed, 1 insertions, 6 deletions

diff --git a/gdb/python/python.c b/gdb/python/python.c
index 66b6631f93..1a0562a227 100644
--- a/gdb/python/python.c
+++ b/gdb/python/python.c
@@ -1359,15 +1359,10 @@ gdbpy_execute_objfile_script (const struct extension_language_defn *extlang,
 static PyObject *
 gdbpy_get_current_objfile (PyObject *unused1, PyObject *unused2)
 {
-  PyObject *result;
-
   if (! gdbpy_current_objfile)
     Py_RETURN_NONE;
 
-  result = objfile_to_objfile_object (gdbpy_current_objfile);
-  if (result)
-    Py_INCREF (result);
-  return result;
+  return objfile_to_objfile_object (gdbpy_current_objfile).release ();
 }
 
 /* Compute the list of active python type printers and store them in