pgsql: Fix end-of-loop optimization in pglz_find_match() function.

Fix end-of-loop optimization in pglz_find_match() function.

After the recent pglz optimization patch, the next/prev pointers in the
hash table are never NULL, INVALID_ENTRY_PTR is used to represent invalid
entries instead. The end-of-loop check in pglz_find_match() function didn't
get the memo. The result was the same from a correctness point of view, but
because the NULL-check would never fail, the tiny optimization turned into
a pessimization.

Reported by Stephen Frost, using Coverity scanner.

Branch
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master

Details
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http://git.postgresql.org/pg/commitdiff/3f2adace1ec025908b5189f0773b4eaab3d228d5

Modified Files
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src/backend/utils/adt/pg_lzcompress.c |    2 +-
1 file changed, 1 insertion(+), 1 deletion(-)