fix endless loop in Task/Activity-tree

entity/ModuleTree_entity/recordcontainers/jdito/contentProcess.js

@@ -48,9 +48,7 @@ function queryChildrenElements (pContextName, pID) {
         
         // Query children
         let children = queryChildrenElements("Task", taskResult[i][0]);
-        for (let i = 0; i < children.length; i++) {
-            res.push(children[i]);
-        }
+        res = res.concat(children);
     }
     
     for (let i = 0; i < activityResult.length; i++) {
@@ -60,9 +58,7 @@ function queryChildrenElements (pContextName, pID) {
         
         // Query children
         let children = queryChildrenElements("Activity", activityResult[i][0]);
-        for (let i = 0; i < children.length; i++) {
-            res.push(children[i]);
-        }
+        res = res.concat(children);
     }
       
     return res;