pgsql: Fix incorrect code in new REINDEX CONCURRENTLY code

Fix incorrect code in new REINDEX CONCURRENTLY code

The previous code was adding pointers to transient variables to a
list, but by the time the list was read, the variable might be gone,
depending on the compiler.  Fix it by making copies in the proper
memory context.

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/bb76134b08aa46cdeb0ff1e6d7b392d315529a8c

Modified Files
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src/backend/commands/indexcmds.c | 28 ++++++++++++++++------------
1 file changed, 16 insertions(+), 12 deletions(-)