Only generate result ids when the container has an id

dist/js/select2.amd.full.js

@@ -998,7 +998,7 @@ define('select2/data/select',[
         data.children = children;
       }
 
-      if (data.id) {
+      if (data.id && this.container != null) {
         data._resultId = this.generateResultId(this.container, data);
       }
 

dist/js/select2.amd.js

@@ -998,7 +998,7 @@ define('select2/data/select',[
         data.children = children;
       }
 
-      if (data.id) {
+      if (data.id && this.container != null) {
         data._resultId = this.generateResultId(this.container, data);
       }
 

dist/js/select2.full.js

@@ -10536,7 +10536,7 @@ define('select2/data/select',[
         data.children = children;
       }
 
-      if (data.id) {
+      if (data.id && this.container != null) {
         data._resultId = this.generateResultId(this.container, data);
       }
 

dist/js/select2.js

@@ -1427,7 +1427,7 @@ define('select2/data/select',[
         data.children = children;
       }
 
-      if (data.id) {
+      if (data.id && this.container != null) {
         data._resultId = this.generateResultId(this.container, data);
       }
 

src/js/select2/data/select.js

@@ -148,7 +148,7 @@ define([
         data.children = children;
       }
 
-      if (data.id) {
+      if (data.id && this.container != null) {
         data._resultId = this.generateResultId(this.container, data);
       }