make the back button its own function

ui/app/app.js

@@ -300,11 +300,8 @@ App.prototype.renderDropdown = function () {
     }),
   ])
 }
-
+App.prototype.renderBackButton = function (style, justArrow = false) {
-App.prototype.renderBackToInitButton = function () {
   var props = this.props
-  var button = null
-  var backButton = function (style, justArrow = false) {
   return (
     h('.flex-row', {
       key: 'leftArrow',
@@ -321,7 +318,11 @@ App.prototype.renderBackToInitButton = function () {
       }, 'BACK'),
     ])
   )
-  }
+
+}
+App.prototype.renderBackToInitButton = function () {
+  var props = this.props
+  var button = null
   if (!props.isUnlocked) {
     if (props.currentView.name === 'InitMenu') {
       button = props.forgottenPassword ? h('.flex-row', {
@@ -357,7 +358,7 @@ App.prototype.renderBackToInitButton = function () {
             fontFamily: 'Montserrat Bold',
             color: 'rgb(174, 174, 174)',
           }
-          return backButton(style, true)
+          return this.renderBackButton(style, true)
         case 'restoreVault':
           style = {
             position: 'absolute',
@@ -367,7 +368,7 @@ App.prototype.renderBackToInitButton = function () {
             fontFamily: 'Montserrat Bold',
             color: 'rgb(174, 174, 174)',
           }
-          return backButton(style, true)
+          return this.renderBackButton(style, true)
         default:
           style = {
             position: 'absolute',
@@ -379,7 +380,7 @@ App.prototype.renderBackToInitButton = function () {
             width: '71.969px',
             alignItems: 'flex-end',
           }
-          return backButton(style)
+          return this.renderBackButton(style)
       }
     }
   }