pacsort: fix memory leak

Signed-off-by: Allan McRae <allan@archlinux.org>

src/util/pacsort.c

@@ -227,6 +227,7 @@ static struct input_t *input_new(const char *path, int pathlen)
 
 	in->data = strndup(path, pathlen);
 	if(in->data == NULL) {
+		free(in);
 		return NULL;
 	}