Some gtk-doc fixes (mostly)

rugby-score-store.c

@@ -168,8 +168,8 @@ rugby_score_store_init (RugbyScoreStore *store)
 /**
  * rugby_score_store_new:
  *
- * Creates a #RugbyScoreStore. This can be used to update a #GtkTreeView
- * with possibilities.
+ * Creates a #RugbyScoreStore. This can be used to update a #GtkTreeView with
+ * possibilities.
  *
  * Returns: a new #RugbyScoreStore
  */

rugby-scoring.c

@@ -4,10 +4,11 @@
  * rugby_scoring_get_possibilities:
  * @score: the score of a team
  *
- * Gets the possibile ways of scoring @score points, as a %GVariant of the 
+ * Gets the possibile ways of scoring @score points, as a %GVariant of the
  * type "a(iii)", in the order "tries, utries, pens".
  *
- * Returns: the possibilities, or %NULL in the case there are none
+ * Returns: (transfer-none): the possibilities, or %NULL in the case there are
+ * none
  */
 GVariant *
 rugby_scoring_get_possibilities (gint score)
@@ -17,7 +18,7 @@ rugby_scoring_get_possibilities (gint score)
 	gint max_tries, max_utries;
 	gint tries, utries;
 
-	g_return_val_if_fail (score > 0, NULL);
+	g_return_val_if_fail (score >= 0, NULL);
 
 	g_variant_builder_init (&builder, G_VARIANT_TYPE_ARRAY);