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(parent: 42e9e26) | patch

Extend whole-row Var evaluation to cope with the case that the sub-plan

Extend whole-row Var evaluation to cope with the case that the sub-plan
generating the tuples has resjunk output columns. This is not possible for
simple table scans but can happen when evaluating a whole-row Var for a view.
Per example from Patryk Kordylewski. The problem exists back to 8.0 but
I'm not going to risk back-patching further than 8.2 because of the many
changes in this area.

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