CloseAttr
status_t CloseAttr(OpenAttrCookie* cookie);
inode->CloseAttr(cookie);
status_t CloseAttr(void* node, void* cookie);
status_t error = volume->CloseAttr(fsNode->private_node, cookie);
result = volume->CloseAttr(request->node, request->attrCookie);
virtual status_t CloseAttr(void* node, void* cookie);
virtual status_t CloseAttr(void* node, void* cookie);
virtual status_t CloseAttr(void* node, void* cookie);
virtual status_t CloseAttr(void* node, void* cookie);