When using an NFSv4 mount in the experimental nfs client with delegations

being issued from the server, there was a case where an Open issued locally
based on the delegation would be released before the associated vnode
became inactive. If the delegation was recalled after the open was released,
an Open against the server would not have been acquired and subsequent I/O
operations would need to use the special stateid of all zeros. This patch
fixes that case.

Approved by:	re (kensmith), kib (mentor)

sys/fs/nfsclient/nfs_clstate.c

@@ -2472,7 +2472,7 @@ tryagain:
 			clearok = 1;
 			LIST_FOREACH(owp, &dp->nfsdl_owner, nfsow_list) {
 			    op = LIST_FIRST(&owp->nfsow_open);
-			    if (op != NULL && op->nfso_opencnt > 0) {
+			    if (op != NULL) {
 				clearok = 0;
 				break;
 			    }