fixed initial duplication of bot output

Author: mattieruth

code-helper/client/src/app.js

@@ -220,7 +220,7 @@ class VoiceChatClient {
     const curSpan = this.botSpans[this.curBotSpan];
     if (!curSpan) return;
     const spanInnards = curSpan.innerHTML.replace(/<\/?strong>/g, '');
-    const alreadyEmboldened = spanInnards.slice(0, this.lastBotWordIndex);
+    const alreadyEmboldened = spanInnards.slice(0, this.lastBotWordIndex || 0);
     const yetToEmbolden = spanInnards.slice(this.lastBotWordIndex || 0);
 
     const wordIndex = yetToEmbolden.indexOf(word);