Have Gitaly compile again

Two merge requests got merged touching the same function in Go. This
lead to a state where `err` was already defined while later it was
assigned to with the `:=` notation, which implied it wasn't.

Merge requests in question:
1. https://gitlab.com/gitlab-org/gitaly/merge_requests/1431
2. https://gitlab.com/gitlab-org/gitaly/merge_requests/1424

1 files changed, 3 insertions, 3 deletions

diff --git a/internal/cache/walker.go b/internal/cache/walker.go
index e70ee8846..6e0ba685a 100644
--- a/internal/cache/walker.go
+++ b/internal/cache/walker.go
@@ -22,7 +22,7 @@ func cleanWalk(storageName string) error {
 		return err
 	}
 
-	err := filepath.Walk(cachePath, func(path string, info os.FileInfo, err error) error {
+	walkErr := filepath.Walk(cachePath, func(path string, info os.FileInfo, err error) error {
 		if err != nil {
 			return err
 		}
@@ -53,11 +53,11 @@ func cleanWalk(storageName string) error {
 		return nil
 	})
 
-	if os.IsNotExist(err) {
+	if os.IsNotExist(walkErr) {
 		return nil
 	}
 
-	return err
+	return walkErr
 }
 
 const cleanWalkFrequency = 10 * time.Minute