Fixed creating missing parent folders

app/src/main/java/eu/faircode/email/Core.java

@@ -1305,10 +1305,12 @@ class Core {
             }
         }
 
-        Log.i("Updating folder parents=" + parentFolders.size());
+        Log.i("Creating folders parents=" + parentFolders.size());
         for (String parentName : parentFolders.keySet()) {
             EntityFolder parent = nameFolder.get(parentName);
             if (parent == null && parentName != null) {
+                parent = db.folder().getFolderByName(account.id, parentName);
+                if (parent == null) {
                     parent = new EntityFolder();
                     parent.account = account.id;
                     parent.name = parentName;
@@ -1320,8 +1322,14 @@ class Core {
                     parent.keep_days = 0;
                     parent.selectable = false;
                     parent.id = db.folder().insertFolder(parent);
+                }
                 nameFolder.put(parentName, parent);
             }
+        }
+
+        Log.i("Updating folders parents=" + parentFolders.size());
+        for (String parentName : parentFolders.keySet()) {
+            EntityFolder parent = nameFolder.get(parentName);
             for (EntityFolder child : parentFolders.get(parentName))
                 db.folder().setFolderParent(child.id, parent == null ? null : parent.id);
         }