pgsql: Fix output of Unicode normalization test

Fix output of Unicode normalization test

Several off-by-more-than-one errors caused the output in case of a
test failure to be truncated and unintelligible.

Reviewed-by: Tom Lane <tgl@sss.pgh.pa.us>
Discussion: https://www.postgresql.org/message-id/flat/6a7a8516-7d11-8fbd-0e8b-eadb4f0679eb%402ndquadrant.com

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/b802412106e82ccf1aef36a4984e321082c122cb

Modified Files
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src/common/unicode/norm_test.c | 15 +++++++++------
1 file changed, 9 insertions(+), 6 deletions(-)