[PATCH] Fix Null pointer dereferences (pgoutput.c)

[Ranier Vilela]

Hi,

Per Coverity.

If test oldtuple can be NULL, I mean it can really be NULL.
On DELETE process, if oldtuple is NULL, log error and continue.
So UPDATE must have the same treatment.

regards,
Ranier Vilela

fix_null_pointer_dereference_pgoutput.patch
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