nodefs: fix style in doReadDir

nodefs/bridge.go

@@ -786,8 +786,10 @@ func (b *rawBridge) setStream(cancel <-chan struct{}, input *fuse.ReadIn, inode
 }
 
 func (b *rawBridge) getStream(ctx context.Context, inode *Inode) (DirStream, syscall.Errno) {
-	rd, ok := inode.ops.(Readdirer)
-	if !ok {
+	if rd, ok := inode.ops.(Readdirer); ok {
+		return rd.Readdir(ctx)
+	}
+
 	r := []fuse.DirEntry{}
 	for k, ch := range inode.Children() {
 		r = append(r, fuse.DirEntry{Mode: ch.Mode(),
@@ -795,9 +797,6 @@ func (b *rawBridge) getStream(ctx context.Context, inode *Inode) (DirStream, sys
 			Ino:  ch.StableAttr().Ino})
 	}
 	return NewListDirStream(r), 0
-	}
-
-	return rd.Readdir(ctx)
 }
 
 func (b *rawBridge) ReadDir(cancel <-chan struct{}, input *fuse.ReadIn, out *fuse.DirEntryList) fuse.Status {