pgsql: Separate read and write pointers in pg_saslprep

Separate read and write pointers in pg_saslprep

Use separate pointers for reading const input ('p') and writing to
mutable output ('outp'), avoiding the need to cast away const on the
input parameter.

Author: Bertrand Drouvot <bertranddrouvot.pg@gmail.com>
Discussion: /messages/by-id/aUQHy/MmWq7c97wK@ip-10-97-1-34.eu-west-3.compute.internal

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/de746e0d2a5856f162deed042420ca15e6683cdd

Modified Files
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src/common/saslprep.c | 15 ++++++++-------
1 file changed, 8 insertions(+), 7 deletions(-)