htable: return true for sht_setxi()

- GH #4283

(cherry picked from commit 9ded810b2dfe527db8d8be409fe1f34b002f3325)

src/modules/htable/htable.c

@@ -1406,7 +1406,7 @@ static int ki_ht_setxi(
 		return -1;
 	}
 
-	return 0;
+	return 1;
 }
 
 /**