As of 1eb6d65, the origin data is optionally stored in a 2PC file
header, with the data filled in EndPrepare() even in the default case
where there is no origin data to add. This was inconsistent with all
the other fields of TwoPhaseFileHeader which are initialized in
StartPrepare(), so move the initialization of origin_lsn and
origin_timestamp there instead. The effect of missing the
initialization at this early stage is only cosmetic based on the current
logic of the code, but could have led to issues in the long-term, and it
is more consistent done this way.
Reported-by: Ranier Vilela
Discussion: https://postgr.es/m/CAEudQAooECJ+gU_RZB-yhioPOV94R4ucoHAf68PiJhLpgpVpBw@mail.gmail.com
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