fix yo template

src/app/tabs/support-tab.js

@@ -12,7 +12,7 @@ class SupportTab {
   __showing () {
     if (this.gitterIsLoaded) return
 
-    const iframe = yo`<iframe class="${css.chatIframe}" src='https://gitter.im/ethereum/remix/~embed'>`
+    const iframe = yo`<iframe class="${css.chatIframe}" src='https://gitter.im/ethereum/remix/~embed'></iframe>`
     this.gitterIframe.parentNode.replaceChild(iframe, this.gitterIframe)
     this.gitterIframe = iframe
     this.el.style.display = 'block'

src/app/ui/renderer.js

@@ -87,7 +87,7 @@ Renderer.prototype.error = function (message, container, opt) {
     })
   }
 
-  var $pre = $(opt.useSpan ? yo`<span />` : yo`<pre />`).html(message)
+  var $pre = $(opt.useSpan ? yo`<span></span>` : yo`<pre></pre>`).html(message)
 
   var $error = $(yo`<div class="sol ${opt.type}"><div class="close"><i class="fa fa-close"></i></div></div>`).prepend($pre)
   $(container).append($error)