fix missing references value

Author: martgil

extension/chrome/elements/compose-modules/compose-render-module.ts

@@ -99,9 +99,10 @@ export class ComposeRenderModule extends ViewModule<ComposeView> {
       const inReplyToMessage = thread.messages?.find(message => message.id === this.view.replyMsgId);
       if (inReplyToMessage) {
         const msgId = inReplyToMessage.payload?.headers?.find(header => header.name === 'Message-Id' || header.name === 'Message-ID')?.value;
-        if (msgId) {
+        const references = inReplyToMessage.payload?.headers?.find(header => header.name === 'References')?.value;
+        if (msgId && references) {
           this.view.sendBtnModule.additionalMsgHeaders['In-Reply-To'] = msgId;
-          this.view.sendBtnModule.additionalMsgHeaders.References = msgId;
+          this.view.sendBtnModule.additionalMsgHeaders.References = references + ' ' + msgId;
         }
       }
       this.view.replyParams.subject = `${this.responseMethod === 'reply' ? 'Re' : 'Fwd'}: ${this.view.replyParams.subject}`;