fix missing print option

src/sort.c

@@ -105,7 +105,7 @@ int main (int argc, char **argv) {
 		return 0;
 	}
 
-	while ((opt = getopt_long(argc, argv, "mqbBcsn:ev", long_options, &long_index)) != -1) {
+	while ((opt = getopt_long(argc, argv, "mqbBcsn:eiv", long_options, &long_index)) != -1) {
 		switch (opt) {
 			case 'm':
 				if (algoritmo != -1) {