Change request: fix diff comments

routers/web/repo/pull.go

@@ -788,7 +788,8 @@ func viewPullFiles(ctx *context.Context, beforeCommitID, afterCommitID string) {
 		"numberOfViewedFiles": diff.NumViewedFiles,
 	}
 
-	if err = diff.LoadComments(ctx, issue, ctx.Doer, ctx.Data["ShowOutdatedComments"].(bool)); err != nil {
+	showOutdatedComments, _ := ctx.Data["ShowOutdatedComments"].(bool)
+	if err = diff.LoadComments(ctx, issue, ctx.Doer, showOutdatedComments); err != nil {
 		ctx.ServerError("LoadComments", err)
 		return
 	}

routers/web/repo/pull_review.go

@@ -169,7 +169,8 @@ func UpdateResolveConversation(ctx *context.Context) {
 func renderConversation(ctx *context.Context, comment *issues_model.Comment, origin string) {
 	ctx.Data["PageIsPullFiles"] = origin == "diff"
 
-	showOutdatedComments := origin == "timeline" || ctx.Data["ShowOutdatedComments"].(bool)
+	showOutdatedComments, _ := ctx.Data["ShowOutdatedComments"].(bool)
+	showOutdatedComments = origin == "timeline" || showOutdatedComments
 	comments, err := issues_model.FetchCodeCommentsByLine(ctx, comment.Issue, ctx.Doer, comment.TreePath, comment.Line, showOutdatedComments)
 	if err != nil {
 		ctx.ServerError("FetchCodeCommentsByLine", err)