pgsql: Fix oversight in tsearch type check

Fix oversight in tsearch type check

Use IsBinaryCoercible() method instead of custom
is_expected_type/is_text_type functions which was introduced when tsearch2
was moved into core.

Per report by David E. Wheeler
Analysis by Tom Lane
Patch by me

Branch
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master

Details
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http://git.postgresql.org/pg/commitdiff/9acb9007de30b3daaa9efc16763c3bc6e3e0a92d

Modified Files
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src/backend/utils/adt/tsvector_op.c |   42 ++++-------------------------------
1 file changed, 4 insertions(+), 38 deletions(-)