Be anal about checking that the value in data[0] is a string. Got a bug report/patch from RedHat, but can't duplicate problem 	(w/current version or 0.5). Patch seems safe, though, so I'm checking it in. Code that supposedly causes checker to crash:
Be anal about checking that the value in data[0] is a string.
Got a bug report/patch from RedHat, but can't duplicate problem
	(w/current version or 0.5).
Patch seems safe, though, so I'm checking it in.
Code that supposedly causes checker to crash:

	foo = ["foo", "bar", None].index('mbr')

akaihola/PyChecker,akaihola/PyChecker,thomasvs/pychecker,thomasvs/pychecker