If a database error occurs when we save a recipe (e.g. because a
database-level constraint is voilated) it will mess up the transaction.
Unfortunately that means we need to break out of updating the entire
layer rather than catching the error, because if we do catch it we just
get errors on every update after the initial error; failing early and
giving up on the transaction is a little better in terms of not filling
up the update logs with further useless errors.
Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com>
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