nfs41: fix condition when NFS4ERR_GRACE returned on OPEN

Motivation:
According to rfc5661 server sMUST return NFS4ERR_GRACE if:

  - server in the grace period (rfc5661#section-18.16.3)
  - client did not issued reclaim_complete(rfc5661#section-18.51.3)

Modification:
fix the condition when NFS4ERR_GRACE is returned.

Result:
better spec compliance.

Acked-by: Albert Rossi
Target: master

core/src/main/java/org/dcache/nfs/v4/OperationOPEN.java

@@ -94,7 +94,7 @@ public void process(CompoundContext context, nfs_resop4 result) throws ChimeraNF
 
             case open_claim_type4.CLAIM_NULL:
 
-                if (client.needReclaim() && context.getStateHandler().isGracePeriod()) {
+                if (client.needReclaim() || context.getStateHandler().isGracePeriod()) {
                     throw new GraceException();
                 }