Compensate for CR-LF line endings when editing issues/releases

A body will typically have CR-LF when it was authored using web UI on Windows.

commands/issue.go

@@ -660,7 +660,7 @@ func updateIssue(cmd *Command, args *Args) {
 			Filename: "ISSUE_EDITMSG",
 			Title:    "issue",
 			Edit:     args.Flag.Bool("--edit"),
-			Message:  fmt.Sprintf("%s\n\n%s", issue.Title, issue.Body),
+			Message:  strings.Replace(fmt.Sprintf("%s\n\n%s", issue.Title, issue.Body), "\r\n", "\n", -1),
 		}
 
 		messageBuilder.AddCommentedSection(fmt.Sprintf(`Editing issue #%d for %s

commands/release.go

@@ -596,7 +596,7 @@ text is the title and the rest is the description.`, tagName, project))
 		messageBuilder.Edit = args.Flag.Bool("--edit")
 	} else {
 		messageBuilder.Edit = true
-		messageBuilder.Message = fmt.Sprintf("%s\n\n%s", release.Name, release.Body)
+		messageBuilder.Message = strings.Replace(fmt.Sprintf("%s\n\n%s", release.Name, release.Body), "\r\n", "\n", -1)
 	}
 
 	title, body, err := messageBuilder.Extract()