pgsql: Eliminate unnecessary NULL checks in picksplit method of intarra

Eliminate unnecessary NULL checks in picksplit method of intarray.

Where these checks were being done there was no code path which
could leave them NULL.

Michael Paquier per Coverity

Branch
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master

Details
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http://git.postgresql.org/pg/commitdiff/c923e82a231ebfe7c4329984c68819e26837bee6

Modified Files
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contrib/intarray/_int_gist.c |   16 +++++-----------
1 file changed, 5 insertions(+), 11 deletions(-)