Fix misnamed variable.

app/scripts/metamask-controller.js

@@ -280,9 +280,11 @@ module.exports = class MetamaskController {
   checkTOSChange () {
     try {
       const storedHash = this.configManager.getTOSHash() || 0
-      if (storedHash !== global.newTOSHash) {
+      console.log('storedHash is: ', storedHash)
+      console.log('global.TOS_HASH is: ', global.TOS_HASH)
+      if (storedHash !== global.TOS_HASH) {
         this.resetDisclaimer()
-        this.setTOSHash(global.newTOSHash)
+        this.setTOSHash(global.TOS_HASH)
       }
     } catch (e) {
       console.error('Error in checking TOS change.')