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Merge remote-tracking branch 'origin/QA_4_2' into QA_4_2
Fix #4471: Undefined index warning with referenced column.

Signed-off-by: Hugues Peccatte <hugues.peccatte@gmail.com>
Merge pull request #1254 from Tithugues/QA_4_2_b4471

Fix #4471: Undefined index warning with referenced column.
Merge remote-tracking branch 'origin/QA_4_2'