pgsql: Back-patch removal of extraneous semicolon, so that this will

Log Message:
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Back-patch removal of extraneous semicolon, so that this will build
with recent bisons (if anyone still cares).

Tags:
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REL7_2_STABLE

Modified Files:
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pgsql/contrib/seg:
segparse.y (r1.2 -> r1.2.2.1)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/seg/segparse.y.diff?r1=1.2&r2=1.2.2.1)