dlm: remove unused variable in *dlm_lowcomms_get_buffer()

The variable users is initialized but never used
otherwise, so remove the unused variable.

dpatch engine is used to auto generate this patch.
(https://github.com/weiyj/dpatch)

Signed-off-by: Wei Yongjun <[e-mail]>
Signed-off-by: David Teigland <[e-mail]>

fs/dlm/lowcomms.c

···
 	struct connection *con;
 	struct writequeue_entry *e;
 	int offset = 0;
-	int users = 0;
 
 	con = nodeid2con(nodeid, allocation);
 	if (!con)
···
 	} else {
 		offset = e->end;
 		e->end += len;
-		users = e->users++;
+		e->users++;
 	}
 	spin_unlock(&con->writequeue_lock);
 
···
 		spin_lock(&con->writequeue_lock);
 		offset = e->end;
 		e->end += len;
-		users = e->users++;
+		e->users++;
 		list_add_tail(&e->list, &con->writequeue);
 		spin_unlock(&con->writequeue_lock);
 		goto got_one;