From a147191804e31229332248e0ae6e4479c9bba9e6 Mon Sep 17 00:00:00 2001
From: MaysWind <i@mayswind.net>
Date: Sat, 5 Dec 2020 20:07:08 +0800
Subject: [PATCH] fix null pointer bug

---
 pkg/services/transaction_categories.go | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/pkg/services/transaction_categories.go b/pkg/services/transaction_categories.go
index 85e29e3a..ba86ea14 100644
--- a/pkg/services/transaction_categories.go
+++ b/pkg/services/transaction_categories.go
@@ -67,13 +67,11 @@ func (s *TransactionCategoryService) GetCategoryByCategoryId(uid int64, category
 
 	if err != nil {
 		return nil, err
+	} else if !has {
+		return nil, errs.ErrTransactionCategoryNotFound
 	}
 
-	if has {
-		return category, nil
-	} else {
-		return nil, nil
-	}
+	return category, nil
 }
 
 func (s *TransactionCategoryService) GetCategoryAndSubCategoriesByCategoryId(uid int64, categoryId int64) ([]*models.TransactionCategory, error) {