Removed unnceccessary checks for checking if content and topic are empty strings

Author: KshitizSareen

src/chat/ChatScreen.js

@@ -164,7 +164,7 @@ export default function ChatScreen(props: Props): Node {
           () => undefined,
         );
 
-        if ((content !== undefined && content !== '') || (topic !== undefined && topic !== '')) {
+        if (content !== undefined || topic !== undefined) {
           api.updateMessage(auth, editMessage.id, { content, subject: topic }).catch(error => {
             showErrorAlert(_('Failed to edit message'), error.message);
           });