remove needless file and folder parameters from blame's commit diff links
diff --git a/gotweb/gotweb.c b/gotweb/gotweb.c
index 1670677..fbf1ba3 100644
--- a/gotweb/gotweb.c
+++ b/gotweb/gotweb.c
@@ -3427,10 +3427,8 @@ gw_blame_cb(void *arg, int nlines, int lineno, struct got_object_id *id)
goto err;
if (asprintf(&href_diff,
- "?path=%s&action=diff&commit=%s&file=%s&folder=%s",
- a->gw_trans->repo_name, bline->id_str,
- a->gw_trans->repo_file, a->gw_trans->repo_folder ?
- a->gw_trans->repo_folder : "") == -1) {
+ "?path=%s&action=diff&commit=%s",
+ a->gw_trans->repo_name, bline->id_str) == -1) {
err = got_error_from_errno("asprintf");
goto err;
}