From 6a4b7a3792cee2f91aa7731cef37b54cd2149e36 Mon Sep 17 00:00:00 2001
From: Erik Johnston <erik@matrix.org>
Date: Thu, 16 Nov 2017 16:58:16 +0000
Subject: [PATCH] Fix create filter API

---
 .../dendrite/clientapi/auth/storage/accounts/filter_table.go  | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/github.com/matrix-org/dendrite/clientapi/auth/storage/accounts/filter_table.go b/src/github.com/matrix-org/dendrite/clientapi/auth/storage/accounts/filter_table.go
index 9e3b7d6e6..81bae4545 100644
--- a/src/github.com/matrix-org/dendrite/clientapi/auth/storage/accounts/filter_table.go
+++ b/src/github.com/matrix-org/dendrite/clientapi/auth/storage/accounts/filter_table.go
@@ -92,11 +92,11 @@ func (s *filterStatements) insertFilter(
 	// Check if filter already exists in the database
 	err = s.selectFilterIDByContentStmt.QueryRowContext(ctx,
 		localpart, filterJSON).Scan(&existingFilterID)
-	if err != nil {
+	if err != nil && err != sql.ErrNoRows {
 		return "", err
 	}
 	// If it does, return the existing ID
-	if len(existingFilterID) != 0 {
+	if existingFilterID != "" {
 		return existingFilterID, err
 	}