pgsql: Suppress spurious Coverity warning in prune freeze logic

Suppress spurious Coverity warning in prune freeze logic

Adjust the prune_freeze_setup() parameter types of new_relfrozen_xid and
new_relmin_mxid to prevent misleading Coverity analysis.
heap_page_prune_and_freeze() compared these values against NULL when
passing them to prune_freeze_setup(), causing Coverity to assume they
could be NULL and flag a possible null-pointer dereference later, even
though it occurs inside a directly related conditional.

Reported-by: Coverity
Author: Melanie Plageman <melanieplageman(at)gmail(dot)com>

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/904f9f5ea0e00a88e2429682d01f2ec946bf553a

Modified Files
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src/backend/access/heap/pruneheap.c | 28 ++++++++++++----------------
1 file changed, 12 insertions(+), 16 deletions(-)