sort_by_score appeared twice.
--- a/src/global.h
+++ b/src/global.h
@@ -411,7 +411,6 @@ extern int score(int warnum);
 extern void sort_by_score(int *idxV, int *scrV);
 extern int deaths(int warnum);
 extern void results(FILE * outp);
-extern void sort_by_score();
 extern void Exit(int code);
 extern void reset_regs(void);
 extern void set_reg(char regChr, long val);