Fix RelationIdGetRelation calls that weren't bothering with error checks.
Some of these are quite old, but that doesn't make them not bugs.
We'd rather report a failure via elog than SIGSEGV.
While at it, uniformly spell the error check as !RelationIsValid(rel)
rather than a bare rel == NULL test. The machine code is the same
but it seems better to be consistent.
Coverity complained about this today, not sure why, because the
mistake is in fact old.
Branch
------
REL9_6_STABLE
Details
-------
https://git.postgresql.org/pg/commitdiff/1d87b674828ad3d49b74d0190184d861f183fb30
Modified Files
--------------
src/backend/access/heap/heapam.c | 4 ++++
src/backend/replication/logical/reorderbuffer.c | 6 +++++-
2 files changed, 9 insertions(+), 1 deletion(-)
