bugfix: remove toString

sib-chat.js

@@ -63,7 +63,7 @@ export const SibChat = {
     if(typeof converse_sib !== 'undefined') {
       await converse_sib.loaded_deferred;
       if (await this.resource.jabberRoom) {
-        this.jid = (await this.resource['foaf:jabberID']).toString();
+        this.jid = (await this.resource['foaf:jabberID']);
       } else {
         await store.initGraph(this.resource['@id'], jabberIDContext);
         this.jid = await (store.get(this.resource['@id'])['chatProfile.jabberID']);
@@ -180,7 +180,7 @@ export const SibChat = {
 
     if(this.resource) {
       if (await this.resource.jabberRoom) {
-        this.jid = (await this.resource['foaf:jabberID']).toString();
+        this.jid = (await this.resource['foaf:jabberID']);
       } else {
         await store.initGraph(this.resource['@id'], jabberIDContext);
         this.jid = (await (store.get(this.resource['@id'])['chatProfile.jabberID']));
@@ -238,4 +238,4 @@ export const SibChat = {
   }
 };
 
-Sib.register(SibChat);
+Sib.register(SibChat);
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