suppress warnings about easch <applet>_main() having

no preceding prototype

coreutils/uniq.c

@@ -26,6 +26,7 @@ static FILE *xgetoptfile_uniq_s(char **argv, int read0write2)
 	return (read0write2) ? stdout : stdin;
 }
 
+int uniq_main(int argc, char **argv);
 int uniq_main(int argc, char **argv)
 {
 	FILE *in, *out;