nfsd: use true,false for bool variable in nfs4proc.c

Fixes coccicheck warning:

fs/nfsd/nfs4proc.c:235:1-18: WARNING: Assignment of 0/1 to bool variable
fs/nfsd/nfs4proc.c:368:1-17: WARNING: Assignment of 0/1 to bool variable
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: zhengbin <zhengbin13@huawei.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>

fs/nfsd/nfs4proc.c

@@ -233,7 +233,7 @@ do_open_lookup(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, stru
 	if (!*resfh)
 		return nfserr_jukebox;
 	fh_init(*resfh, NFS4_FHSIZE);
-	open->op_truncate = 0;
+	open->op_truncate = false;
 
 	if (open->op_create) {
 		/* FIXME: check session persistence and pnfs flags.
@@ -366,7 +366,7 @@ nfsd4_open(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 	if (open->op_create && open->op_claim_type != NFS4_OPEN_CLAIM_NULL)
 		return nfserr_inval;
 
-	open->op_created = 0;
+	open->op_created = false;
 	/*
 	 * RFC5661 18.51.3
 	 * Before RECLAIM_COMPLETE done, server should deny new lock