pgsql: Fix contrib/seg's GiST picksplit method.

Fix contrib/seg's GiST picksplit method.

Fix the same size_alpha versus size_beta typo that was recently fixed
in contrib/cube.  Noted by Alexander Korotkov.

Back-patch to all supported branches (there is a more invasive fix in
HEAD).

Branch
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REL8_4_STABLE

Details
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http://git.postgresql.org/gitweb?p=postgresql.git;a=commitdiff;h=7bfefa9a12968c5f3210569f37de402282fb99e6

Modified Files
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contrib/seg/seg.c |    2 +-
1 files changed, 1 insertions(+), 1 deletions(-)