drh e46292a920 Improved rebustness in sqlite3ExprListDup() when it contains a vector assignment ...

from an UPDATE where the initial term is omitted.  This can happen during a
UNION ALL query flattening while processing a virtual table update in which
the first term of the vector is repeated.
[forum:/forumpost/16ca0e9f32|Forum post 16ca0e9f32].

FossilOrigin-Name: 2547cfe38f8fb35109b3fc5bdfada387fe4b2b8a304156b704ab7f03f1f71198

2021-07-05 02:40:29 +00:00

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