pgsql: Remove bogus while-loop.

Remove bogus while-loop.

Commit abf5c5c9a4f142b3343614746bb9e99a794f8e7b added a bogus while-
statement after the for(;;)-loop. It went unnoticed in testing, because
it was dead code.

Report by KONDO Mitsumasa. Backpatch to 9.3. The commit that introduced
this was also applied to 9.2, but not the bogus while-loop part, because
the code in 9.2 looks quite different.

Branch
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REL9_3_STABLE

Details
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http://git.postgresql.org/pg/commitdiff/17450cb6809f534283545f629082efcd3ea904ed

Modified Files
--------------
src/backend/access/transam/xlog.c |    4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)