https://bugs.gentoo.org/730848
--- a/src/ranking.c
+++ b/src/ranking.c
@@ -7,3 +7,3 @@
  **********************/
-int ScoreRanking(void)
+void ScoreRanking(void)
 {
--- a/src/ranking.h
+++ b/src/ranking.h
@@ -3,2 +3,3 @@
 
+void ScoreRanking(void);
 void RankingScore(void);