Order position to assign to the next transaction added to the wallet.
Declared in <wallet/wallet.h>
[[guarded_by(0x7f94fde04058), guarded_by(0x7f95061a6d98), guarded_by(0x7f94f2b778a8), guarded_by(0x7f94f0cf6538), guarded_by(0x7f94fee38f28)]]
int64_t nOrderPosNext = 0;