fixes comment

wzshiming · wzshiming · commit 723b3d75f350 · 2018-06-25T00:07:51.000+08:00
diff --git a/types_comment_locator.go b/types_comment_locator.go
@@ -34,7 +34,7 @@ func commentLocator(pos, end token.Pos, comments []*ast.CommentGroup) *ast.Comme
 	i := sort.Search(len(comments), func(i int) bool {
 		return pos < comments[i].Pos()
 	})
-	if i == -1 {
+	if i == -1 || i >= len(comments) {
 		return nil
 	}
 	if comments[i].End() < end {

Original file line number	Diff line number	Diff line change
`@@ -34,7 +34,7 @@ func commentLocator(pos, end token.Pos, comments []ast.CommentGroup) ast.Comme`
`34`	`34`	`i := sort.Search(len(comments), func(i int) bool {`
`35`	`35`	`return pos < comments[i].Pos()`
`36`	`36`	`})`
`37`		`- if i == -1 {`
	`37`	`+ if i == -1 \|\| i >= len(comments) {`
`38`	`38`	`return nil`
`39`	`39`	`}`
`40`	`40`	`if comments[i].End() < end {`