update go git from v4.10.0 to v4.11.0 (#7096)

vendor/gopkg.in/src-d/go-git.v4/plumbing/cache/object_lru.go

@@ -61,6 +61,11 @@ func (c *ObjectLRU) Put(obj plumbing.EncodedObject) {
 	c.actualSize += objSize
 	for c.actualSize > c.MaxSize {
 		last := c.ll.Back()
+		if last == nil {
+			c.actualSize = 0
+			break
+		}
+
 		lastObj := last.Value.(plumbing.EncodedObject)
 		lastSize := FileSize(lastObj.Size())
 

vendor/gopkg.in/src-d/go-git.v4/plumbing/object/commit.go

@@ -76,8 +76,8 @@ func (c *Commit) Tree() (*Tree, error) {
 	return GetTree(c.s, c.TreeHash)
 }
 
-// Patch returns the Patch between the actual commit and the provided one.
-// Error will be return if context expires. Provided context must be non-nil
+// PatchContext returns the Patch between the actual commit and the provided one.
+// Error will be return if context expires. Provided context must be non-nil.
 func (c *Commit) PatchContext(ctx context.Context, to *Commit) (*Patch, error) {
 	fromTree, err := c.Tree()
 	if err != nil {
@@ -291,25 +291,33 @@ func (b *Commit) encode(o plumbing.EncodedObject, includeSig bool) (err error) {
 	return err
 }
 
-// Stats shows the status of commit.
+// Stats returns the stats of a commit.
 func (c *Commit) Stats() (FileStats, error) {
-	// Get the previous commit.
-	ci := c.Parents()
-	parentCommit, err := ci.Next()
+	return c.StatsContext(context.Background())
+}
+
+// StatsContext returns the stats of a commit. Error will be return if context
+// expires. Provided context must be non-nil.
+func (c *Commit) StatsContext(ctx context.Context) (FileStats, error) {
+	fromTree, err := c.Tree()
 	if err != nil {
-		if err == io.EOF {
-			emptyNoder := treeNoder{}
-			parentCommit = &Commit{
-				Hash: emptyNoder.hash,
-				// TreeHash: emptyNoder.parent.Hash,
-				s: c.s,
-			}
-		} else {
+		return nil, err
+	}
+
+	toTree := &Tree{}
+	if c.NumParents() != 0 {
+		firstParent, err := c.Parents().Next()
+		if err != nil {
+			return nil, err
+		}
+
+		toTree, err = firstParent.Tree()
+		if err != nil {
 			return nil, err
 		}
 	}
 
-	patch, err := parentCommit.Patch(c)
+	patch, err := toTree.PatchContext(ctx, fromTree)
 	if err != nil {
 		return nil, err
 	}

vendor/gopkg.in/src-d/go-git.v4/plumbing/object/commit_walker_bfs.go

@@ -67,7 +67,7 @@ func (w *bfsCommitIterator) Next() (*Commit, error) {
 		for _, h := range c.ParentHashes {
 			err := w.appendHash(c.s, h)
 			if err != nil {
-				return nil, nil
+				return nil, err
 			}
 		}
 

vendor/gopkg.in/src-d/go-git.v4/plumbing/object/patch.go

@@ -320,11 +320,18 @@ func getFileStatsFromFilePatches(filePatches []fdiff.FilePatch) FileStats {
 		}
 
 		for _, chunk := range fp.Chunks() {
+			s := chunk.Content()
 			switch chunk.Type() {
 			case fdiff.Add:
-				cs.Addition += strings.Count(chunk.Content(), "\n")
+				cs.Addition += strings.Count(s, "\n")
+				if s[len(s)-1] != '\n' {
+					cs.Addition++
+				}
 			case fdiff.Delete:
-				cs.Deletion += strings.Count(chunk.Content(), "\n")
+				cs.Deletion += strings.Count(s, "\n")
+				if s[len(s)-1] != '\n' {
+					cs.Deletion++
+				}
 			}
 		}
 

vendor/gopkg.in/src-d/go-git.v4/plumbing/object/tree.go

@@ -135,7 +135,7 @@ func (t *Tree) FindEntry(path string) (*TreeEntry, error) {
 	pathCurrent := ""
 
 	// search for the longest path in the tree path cache
-	for i := len(pathParts); i > 1; i-- {
+	for i := len(pathParts) - 1; i > 1; i-- {
 		path := filepath.Join(pathParts[:i]...)
 
 		tree, ok := t.t[path]