Fix crash in remote UPDATE planning due to a list moving to next element with lnext in foreach loop. This was not spotted by regressions.
Fix crash in remote UPDATE planning due to a list moving to next element
with lnext in foreach loop.
This was not spotted by regressions.

yazun/postgres-xl,pavanvd/postgres-xl,arcivanov/postgres-xl,zeroae/postgres-xl,zeroae/postgres-xl,Postgres-XL/Postgres-XL,postmind-net/postgres-xl,arcivanov/postgres-xl,Postgres-XL/Postgres-XL,zeroae/postgres-xl,postmind-net/postgres-xl,postmind-net/postgres-xl,snaga/postgres-xl,ovr/postgres-xl,techdragon/Postgres-XL,pavanvd/postgres-xl,snaga/postgres-xl,postmind-net/postgres-xl,Postgres-XL/Postgres-XL,postmind-net/postgres-xl,oberstet/postgres-xl,oberstet/postgres-xl,techdragon/Postgres-XL,ovr/postgres-xl,techdragon/Postgres-XL,kmjungersen/PostgresXL,arcivanov/postgres-xl,yazun/postgres-xl,arcivanov/postgres-xl,zeroae/postgres-xl,kmjungersen/PostgresXL,techdragon/Postgres-XL,zeroae/postgres-xl,arcivanov/postgres-xl,kmjungersen/PostgresXL,oberstet/postgres-xl,pavanvd/postgres-xl,ovr/postgres-xl,snaga/postgres-xl,yazun/postgres-xl,techdragon/Postgres-XL,oberstet/postgres-xl,pavanvd/postgres-xl,yazun/postgres-xl,arcivanov/postgres-xl,pavanvd/postgres-xl,ovr/postgres-xl,ovr/postgres-xl,Postgres-XL/Postgres-XL,snaga/postgres-xl,kmjungersen/PostgresXL,kmjungersen/PostgresXL,oberstet/postgres-xl,Postgres-XL/Postgres-XL,yazun/postgres-xl,snaga/postgres-xl