7656 unlinking directory on tmpfs can cause kernel panic

@@ -1103,12 +1103,11 @@
         rw_enter(&parent->tn_rwlock, RW_WRITER);
         rw_enter(&tp->tn_rwlock, RW_WRITER);
 
         if (tp->tn_type != VDIR ||
             (error = secpolicy_fs_linkdir(cred, dvp->v_vfsp)) == 0)
-                error = tdirdelete(parent, tp, nm, tp->tn_type == VDIR ?
-                    DR_RMDIR : DR_REMOVE, cred);
+                error = tdirdelete(parent, tp, nm, DR_REMOVE, cred);
 
         rw_exit(&tp->tn_rwlock);
         rw_exit(&parent->tn_rwlock);
         vnevent_remove(TNTOV(tp), dvp, nm, ct);
         tmpnode_rele(tp);