[fractal: 1/2] (#431) Check vector length before accessing element

[Daniel Garcia Moreno <danigm src gnome org>]

commit 4bce11601cb4c1962a07a9b32fb4a9f42b83e89c
Author: Payson Wallach <paysonwallach icloud com>
Date:   Thu Nov 14 22:44:14 2019 -0600

    (#431) Check vector length before accessing element

 fractal-gtk/src/app/connect/headerbar.rs | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/fractal-gtk/src/app/connect/headerbar.rs b/fractal-gtk/src/app/connect/headerbar.rs
index dc815e47..f0088e46 100644
--- a/fractal-gtk/src/app/connect/headerbar.rs
+++ b/fractal-gtk/src/app/connect/headerbar.rs
@@ -25,7 +25,7 @@ impl App {
                     decor.splitn(2, ':').map(|s| s.to_string()).collect();
                 // Check if the close button is to the right; If not,
                 // change the headerbar controls
-                if !decor_split[1].contains("close") {
+                if decor_split.len() > 1 && !decor_split[1].contains("close") {
                     right_header.set_show_close_button(false);
                     left_header.set_show_close_button(true);
                 }
@@ -37,7 +37,7 @@ impl App {
                     let decor_split: Vec<String> = decor.splitn(2,':').map(|s| s.to_string()).collect();
                     // Change the headerbar controls depending on position
                     // of close
-                    if !decor_split[1].contains("close") {
+                    if decor_split.len() > 1 && !decor_split[1].contains("close") {
                         right_header.set_show_close_button(false);
                         left_header.set_show_close_button(true);
                     } else {