preference: Only toggle the state if element is present.

Fixes #393.
zulip · Jan 22, 2018 · aedd952 · aedd952
1 parent c8d7a79
commit aedd952
Showing 1 changed file with 6 additions and 2 deletions.
diff --git a/app/renderer/js/pages/preference/preference.js b/app/renderer/js/pages/preference/preference.js
@@ -77,13 +77,17 @@ class PreferenceView extends BaseComponent {
 		ipcRenderer.on('toggle-sidebar', (event, state) => {
 			const inputSelector = '#sidebar-option .action .switch input';
 			const input = document.querySelector(inputSelector);
-			input.checked = state;
+			if (input) {
+				input.checked = state;
+			}
 		});
 
 		ipcRenderer.on('toggletray', (event, state) => {
 			const inputSelector = '#tray-option .action .switch input';
 			const input = document.querySelector(inputSelector);
-			input.checked = state;
+			if (input) {
+				input.checked = state;
+			}
 		});
 	}
 }