prepared statement cluster conflict crashing in item parameter setup

Binary protocol prepared statement execution, which happens after cluster wide conflict, may crash in item parameter setup phase for:

append_query_string (csinfo=0xa5a5a5a5a5a5a5a5, to=0x7fce93673ff0, str=0x7fcea8059458 "", len=11, no_backslash=false)

Where character set info is not valid.

The problem can be reproduced in two node cluster with sysbench:
sysbench --mysql-host=127.0.0.1 --mysql-port=16001 --mysql-user=root --mysql-password= --mysql-db=sbtest --mysql-ignore-errors=all --time=600 --threads=8 --table-size=20 --tables=3 --report-interval=5 /usr/share/sysbench/oltp_write_only.lua run