avoid possible nil entry

weed/mount/weedfs_attr.go

@@ -145,6 +145,11 @@ func (wfs *WFS) setRootAttr(out *fuse.AttrOut) {
 
 func (wfs *WFS) setAttrByPbEntry(out *fuse.Attr, inode uint64, entry *filer_pb.Entry, calculateSize bool) {
 	out.Ino = inode
+	out.Blocks = (out.Size + blockSize - 1) / blockSize
+	setBlksize(out, blockSize)
+	if entry == nil {
+		return
+	}
 	if entry.Attributes != nil && entry.Attributes.Inode != 0 {
 		out.Ino = entry.Attributes.Inode
 	}
@@ -154,11 +159,6 @@ func (wfs *WFS) setAttrByPbEntry(out *fuse.Attr, inode uint64, entry *filer_pb.E
 	if entry.FileMode()&os.ModeSymlink != 0 {
 		out.Size = uint64(len(entry.Attributes.SymlinkTarget))
 	}
-	out.Blocks = (out.Size + blockSize - 1) / blockSize
-	setBlksize(out, blockSize)
-	if entry == nil {
-		return
-	}
 	out.Mtime = uint64(entry.Attributes.Mtime)
 	out.Ctime = uint64(entry.Attributes.Mtime)
 	out.Atime = uint64(entry.Attributes.Mtime)