[issue3929] Incorrect exception raising in dbm.open on non-existing DB

[Amaury Forgeot d'Arc]

Amaury Forgeot d'Arc <amauryfa at gmail.com> added the comment:

dbm.error is documented as a tuple, and I'd prefer not to change this:
  http://docs.python.org/dev/3.0/library/dbm.html#dbm.error
Since it says that its first member is another dbm.error exception,
we could simply raise error[0](message)

Attached another patch, with the same test case.

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keywords: +needs review
nosy: +amaury.forgeotdarc
Added file: http://bugs.python.org/file11556/dbm-2.patch

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