PR python/14387:

	PR python/14387:
	* python/py-bpevent.c (create_breakpoint_event_object): Update
	comment.
	* python/py-event.c (evpy_add_attribute): Update comment.
	* python/py-exitedevent.c (create_exited_event_object): Fix
	reference counting and error handling.
	* python/py-newobjfileevent.c (create_new_objfile_event_object):
	Fix reference counting.
	* python/py-signalevent.c (create_signal_event_object): Fix
	reference counting and error handling.
	* python/py-stopevent.c (emit_stop_event): Fix reference
	counting.
	* python/py-threadevent.c (get_event_thread): Return a
	borrowed reference.
	* python/py-type.c (convert_field): Fix reference counting.