Trivial EOL.

main.c

@@ -453,7 +453,7 @@ static char *load_config(const char *arg, void *unused)
 
 static char *print_ndevs_and_exit(int *ndevs)
 {
-	printf("%i GPU devices detected", *ndevs);
+	printf("%i GPU devices detected\n", *ndevs);
 	exit(*ndevs);
 }