Fix a few minor warnings

.golangci.yml

@@ -17,4 +17,4 @@ linters:
   - whitespace
   - nakedret
   - dogsled
-  - scopelint
+  - exportloopref

framework/config/endpoint.go

@@ -79,7 +79,6 @@ func (e Endpoint) Address() string {
 		return e.Path
 	}
 	return net.JoinHostPort(e.Host, e.Port)
-
 }
 
 func (e Endpoint) IsTLS() bool {

internal/storage/blob/s3/s3.go

@@ -106,7 +106,9 @@ func (b *s3blob) Write(p []byte) (n int, err error) {
 
 func (b *s3blob) Close() error {
 	if !b.didSync {
-		b.pw.CloseWithError(fmt.Errorf("storage.blob.s3: blob closed without Sync"))
+		if err := b.pw.CloseWithError(fmt.Errorf("storage.blob.s3: blob closed without Sync")); err != nil {
+			panic(err)
+		}
 	}
 	return nil
 }
@@ -127,7 +129,9 @@ func (s *Store) Create(ctx context.Context, key string, blobSize int64) (module.
 			PartSize: partSize,
 		})
 		if err != nil {
-			pr.CloseWithError(fmt.Errorf("s3 PutObject: %w", err))
+			if err := pr.CloseWithError(fmt.Errorf("s3 PutObject: %w", err)); err != nil {
+				panic(err)
+			}
 		}
 		errCh <- err
 	}()

internal/storage/blob/test_blob.go

@@ -52,7 +52,9 @@ func TestStore(t *testing.T, newStore func() module.BlobStore, cleanStore func(m
 	}
 	cleanBackend := func(bi backendtests.Backend) {
 		b := bi.(testBack)
-		b.Backend.(*imapsql.Backend).Close()
+		if err := b.Backend.(*imapsql.Backend).Close(); err != nil {
+			panic(err)
+		}
 		cleanStore(b.ExtStore)
 	}