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Valgrind builds with assertions enabled sometimes perform a theoretically unsafe page access inside an assertion in heapam_tuple_lock(). This happened when the eval-plan-qual isolation test ran one of the permutations added by commita2418f9e23
. Avoid complaints from Valgrind by moving the assertion ever so slightly. This is minor cleanup for commit1e0dfd16
, which added Valgrind buffer access instrumentation. No backpatch, since this only happens within an assertion, and seems very unlikely to cause any real problems even with assert-enabled builds.