Code review comment for lp:~rick-fdd/pyopenssl/pkcs12_mod_and_export2

>
> Excellent points! Thanks for the lesson. I pushed all five
> fixes to lp:~rick-fdd/pyopenssl/pkcs12_mod_and_export2
>

Awesome, thanks for all your work on this. :) I made a bunch of cosmetic changes (I should put
together a style guide for pyOpenSSL, but I'm still not sure what it would say), but notices a
couple more actual potential issues, which I also tried to tackle. My changes are in a branch
based on yours, <lp:~exarkun/pyopenssl/pkcs12_mod_and_export2>. The revisions which actually
contain interesting changes are:

  http://bazaar.launchpad.net/~exarkun/pyopenssl/pkcs12_mod_and_export2/revision/149
  http://bazaar.launchpad.net/~exarkun/pyopenssl/pkcs12_mod_and_export2/revision/156
  http://bazaar.launchpad.net/~exarkun/pyopenssl/pkcs12_mod_and_export2/revision/157

I think I'm happy with the code now, so if you think these changes are sensible, I think I'll go ahead and merge them into trunk.

Jean-Paul