pgsql: Remove dead assignment to local variable.

Remove dead assignment to local variable.

This should have been removed in commit 7e30c186da, which split the loop
into two. Only the first loop uses the 'from' variable; updating it in
the second loop is bogus. It was never read after the first loop, so this
was harmless and surely optimized away by the compiler, but let's be tidy.

Backpatch to all supported versions.

Author: Ranier Vilela
Discussion:
https://www.postgresql.org/message-id/CAEudQAoWq%2BAL3BnELHu7gms2GN07k-np6yLbukGaxJ1vY-zeiQ%40mail.gmail.com

Branch
------
REL_12_STABLE

Details
-------
https://git.postgresql.org/pg/commitdiff/4df5f6c26b2d5c89f1bc71eaee34e354974e8b97

Modified Files
--------------
src/backend/access/nbtree/nbtxlog.c | 1 -
1 file changed, 1 deletion(-)