semodule_package: Close leaking fd

Signed-off-by: Petr Lautrbach <plautrba@redhat.com>

semodule-utils/semodule_package/semodule_package.c

@@ -73,6 +73,7 @@ static int file_to_data(const char *path, char **data, size_t * len)
 		goto err;
 	}
 	if (!sb.st_size) {
+		close(fd);
 		*len = 0;
 		return 0;
 	}