[CF 5587] v1 - Missing [NO] INDENT flag in XMLSerialize backward parsing

This branch was automatically generated by a robot using patches from an
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https://commitfest.postgresql.org/patch/5587

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Patch(es): https://www.postgresql.org/message-id/bebd457e-5b43-46b3-8fc6-f6a6509483ba@uni-muenster.de
Author(s): Jim Jones

Author: Commitfest Bot