PR gdb/9747:

	PR gdb/9747:
	* gdbthread.h (finish_thread_state, finish_thread_state_cleanup):
	Declare.
	* thread.c (finish_thread_state, finish_thread_state_cleanup): New.
	* infrun.c (wait_for_inferior, fetch_inferior_event): If an error
	is thrown while handling an event, finish the thread state.
	(normal_stop): Use finish_thread_state cleanup.
	* infcmd.c (run_command_1): If an error is thrown while starting
	the inferior, finish the thread state.