Change thread_to_thread_object to return a new reference

This changes thread_to_thread_object to return a new reference and
fixes up all the callers.

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

	* python/python-internal.h (thread_to_thread_object): Change
	return type.
	* python/py-inferior.c (thread_to_thread_object): Return a new
	reference.
	(infpy_thread_from_thread_handle): Update.
	* python/py-infthread.c (gdbpy_selected_thread): Update.
	* python/py-stopevent.c (create_stop_event_object): Update.
	* python/py-threadevent.c (py_get_event_thread): Return a new
	reference.
	(py_get_event_thread): Update.
	* python/py-event.h (py_get_event_thread): Change return type.
	* python/py-continueevent.c (create_continue_event_object):
	Update.

1 files changed, 1 insertions, 9 deletions

diff --git a/gdb/python/py-infthread.c b/gdb/python/py-infthread.c
index 36ae71b..4b2705a 100644
--- a/gdb/python/py-infthread.c
+++ b/gdb/python/py-infthread.c
@@ -284,15 +284,7 @@ PyObject *
 gdbpy_selected_thread (PyObject *self, PyObject *args)
 {
   if (inferior_ptid != null_ptid)
-    {
-      PyObject *thread_obj
-	= (PyObject *) thread_to_thread_object (inferior_thread ());
-      if (thread_obj != NULL)
-	{
-	  Py_INCREF (thread_obj);
-	  return thread_obj;
-	}
-    }
+    return thread_to_thread_object (inferior_thread ()).release ();
 
   Py_RETURN_NONE;
 }