Log Message:
-----------
Minor parentheses cleanup.
Modified Files:
--------------
pgsql/src/interfaces/ecpg/pgtypeslib:
interval.c (r1.27 -> r1.28)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/interfaces/ecpg/pgtypeslib/interval.c.diff?r1=1.27&r2=1.28)