Code review comment for lp:~gary-lasker/software-center/fix-shutdown-crash-lp996333

Hi Michael, yes, thanks, decimal values are unuseful indeed, my apologies for the mistake. I updated the test using stat.S_IRUSR and stat.S_IWUSR as these definitely seem more proper (although, hmm, not exactly "readable" with those names, oh well).

Hopefully this will take care of it. Thanks again!