coverity: #1425890

silence complaint about unchecked return value from library function

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

src/lxc/tools/lxc_copy.c

@@ -417,7 +417,7 @@ static int do_clone_ephemeral(struct lxc_container *c,
 		if (!mkdtemp(randname))
 			return -1;
 		if (chmod(randname, 0770) < 0) {
-			remove(randname);
+			(void)remove(randname);
 			return -1;
 		}
 		arg->newname = randname + strlen(arg->newpath) + 1;