Update filebrowser.js

Author: benhatsor

filebrowser.js

@@ -468,7 +468,7 @@ async function renderSidebarHTML() {
             if (fileType === 'video') fileIconHTML = videoIcon;
             if (fileType === 'audio') fileIconHTML = audioIcon;
 
-            out += `
+            out = out + `
             <div class="item file`+ modified +`" sha="`+ file.sha +`">
               <div class="label">
                 `+ fileIconHTML +`
@@ -579,7 +579,7 @@ async function renderSidebarHTML() {
 
             // render repo
 
-            out += `
+            out = out + `
             <div class="item repo" ` + ('fullName="' + modRepoName + '"') + `>
               <div class="label">
                 `+ repoIcon +`