worktree: address PR comments: sort imports appropriately

Signed-off-by: Mark Bartel <github@spottybenny.ca>

Author: spottybenny

worktree_commit.go

@@ -2,6 +2,7 @@ package git
 
 import (
 	"path"
+	"sort"
 	"strings"
 
 	"gopkg.in/src-d/go-git.v4/plumbing"
@@ -11,7 +12,6 @@ import (
 	"gopkg.in/src-d/go-git.v4/storage"
 
 	"gopkg.in/src-d/go-billy.v4"
-	"sort"
 )
 
 // Commit stores the current contents of the index in a new commit along with

worktree_commit_test.go

@@ -1,22 +1,22 @@
 package git
 
 import (
+	"bytes"
+	"io/ioutil"
+	"os"
+	"os/exec"
 	"time"
 
 	"gopkg.in/src-d/go-git.v4/plumbing"
 	"gopkg.in/src-d/go-git.v4/plumbing/object"
 	"gopkg.in/src-d/go-git.v4/plumbing/storer"
 	"gopkg.in/src-d/go-git.v4/storage/memory"
+	"gopkg.in/src-d/go-git.v4/storage/filesystem"
 
-	"bytes"
 	. "gopkg.in/check.v1"
 	"gopkg.in/src-d/go-billy.v4/memfs"
 	"gopkg.in/src-d/go-billy.v4/osfs"
 	"gopkg.in/src-d/go-billy.v4/util"
-	"gopkg.in/src-d/go-git.v4/storage/filesystem"
-	"io/ioutil"
-	"os"
-	"os/exec"
 )
 
 func (s *WorktreeSuite) TestCommitInvalidOptions(c *C) {