do not return "cancel" if it has been called

wxiaoguang · web-flow · commit b95db68478ab · 2024-10-29T12:37:39.000+08:00
diff --git a/modules/git/repo_index.go b/modules/git/repo_index.go
@@ -55,6 +55,7 @@ func (repo *Repository) ReadTreeToTemporaryIndex(treeish string) (filename, tmpD
 		// if error happens and there is a cancel function, do the clean up
 		if err != nil && cancel != nil {
 			cancel()
+			cancel = nil
 		}
 	}()
 

Original file line number	Diff line number	Diff line change
`@@ -55,6 +55,7 @@ func (repo *Repository) ReadTreeToTemporaryIndex(treeish string) (filename, tmpD`
`55`	`55`	`// if error happens and there is a cancel function, do the clean up`
`56`	`56`	`if err != nil && cancel != nil {`
`57`	`57`	`cancel()`
	`58`	`+ cancel = nil`
`58`	`59`	`}`
`59`	`60`	`}()`
`60`	`61`