Some ovsqlite-util polish

[Bo Lindbergh]

It doesn't seem to be explicitly stated in the DBI documentation,
but the RaiseError attribute passed to the connect method applies
to that method call itself as well as to future method calls
on the returned database handle.  So, with RaiseError => 1,
there's no need to check the return value.  Patch attached.

/Bo Lindbergh
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