warning in twophase.c

Been seeing this warning recently:

twophase.c: In function ‘RecoverPreparedTransactions’:
twophase.c:1916:9: warning: variable ‘overwriteOK’ set but not used
[-Wunused-but-set-variable]
bool overwriteOK = false;
^~~~~~~~~~~

As the message says, the value of overwriteOK is not used anywhere in
RecoverPreparedTransactions:

bool overwriteOK = false;

/*
* It's possible that SubTransSetParent has been set before, if
* the prepared transaction generated xid assignment records. Test
* here must match one used in AssignTransactionId().
*/
if (InHotStandby && (hdr->nsubxacts >= PGPROC_MAX_CACHED_SUBXIDS ||
XLogLogicalInfoActive()))
overwriteOK = true;

Couldn't we get rid of it?

Thanks,
Amit