Bug 1586250 - 'Method not implemented' when calling method: [prplIAccount::unInit]. r=florian

chat/protocols/facebook/facebook.js

@@ -47,6 +47,9 @@ FacebookAccount.prototype = {
     );
     this.reportDisconnected();
   },
+
+  // Nothing to do.
+  unInit() {},
 };
 
 function FacebookProtocol() {}

chat/protocols/yahoo/yahoo.js

@@ -48,6 +48,9 @@ YahooAccount.prototype = {
     );
     this.reportDisconnected();
   },
+
+  // Nothing to do.
+  unInit() {},
 };
 
 function YahooProtocol() {}