blame.c: replace instance of !oidcmp for oideq

0906ac2b (blame: use changed-path Bloom filters, 2020-04-16)
introduced a call to oidcmp() that should have been oideq(), which
was introduced in 14438c44 (introduce hasheq() and oideq(),
2018-08-28).

Signed-off-by: Edmundo Carmona Antoranz <eantoranz@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

blame.c

@@ -1352,8 +1352,8 @@ static struct blame_origin *find_origin(struct repository *r,
 	else {
 		int compute_diff = 1;
 		if (origin->commit->parents &&
-		    !oidcmp(&parent->object.oid,
-			    &origin->commit->parents->item->object.oid))
+		    oideq(&parent->object.oid,
+			  &origin->commit->parents->item->object.oid))
 			compute_diff = maybe_changed_path(r, origin, bd);
 
 		if (compute_diff)