saltstack/salt — pull request #9432 by Cofyc (2013-12-25 06:14:30+00:00)
Title: related to #9274, another place needs exception handling

Example traceback:
```
Traceback (most recent call last):
File "/usr/lib/pymodules/python2.7/salt/minion.py", line 695, in _thread_return
return_data = func(*args, **kwargs)
File "/usr/lib/pymodules/python2.7/salt/modules/ps.py", line 65, in top
user, system = process.get_cpu_times()
File "/usr/lib/python2.7/dist-packages/psutil/__init__.py", line 364, in get_cpu_times
return self._platform_impl.get_cpu_times()
File "/usr/lib/python2.7/dist-packages/psutil/_pslinux.py", line 327, in wrapper
raise NoSuchProcess(self.pid, self._process_name)
NoSuchProcess: process no longer exists (pid=1068)
```