Valgrind issue in insert

==10996== Thread 16:
==10996== Conditional jump or move depends on uninitialised value(s)
==10996== at 0x632E6A: Table::compare_record() (table.cc:3503)
==10996== by 0x5EDE2A: write_record(Session*, Table*, st_copy_info*) (sql_insert.cc:816)
==10996== by 0x5EE7F5: mysql_insert(Session*, TableList*, List<Item>&, List<List<Item> >&, List<Item>&, List<Item>&, enum_duplicates, bool) (sql_insert.cc:384)
==10996== by 0x62C3C5: drizzled::statement::Insert::execute() (insert.cc:57)
==10996== by 0x5FB569: mysql_execute_command(Session*) (sql_parse.cc:501)
==10996== by 0x5FC436: mysql_parse(Session*, char const*, unsigned int, char const**) (sql_parse.cc:790)
==10996== by 0x5FC7E9: dispatch_command(enum_server_command, Session*, char*, unsigned int) (sql_parse.cc:224)
==10996== by 0x5CA660: Session::executeStatement() (session.cc:746)
==10996== by 0x5CBEE6: Session::run() (session.cc:596)
==10996== by 0x15261161: session_thread (multi_thread.h:67)
==10996== by 0x61213B9: start_thread (in /lib/libpthread-2.9.so)
==10996== by 0x641BFCC: clone (in /lib/libc-2.9.so)