fixing a glitch at zipping files

app/src/main/kotlin/com/simplemobiletools/filemanager/pro/adapters/ItemsAdapter.kt

@@ -439,7 +439,7 @@ class ItemsAdapter(activity: SimpleActivity, var listItems: MutableList<ListItem
                 val fileDirItems = ArrayList<FileDirItem>()
                 while (entries.hasMoreElements()) {
                     val entry = entries.nextElement()
-                    val currPath = if (entry.isDirectory) it else "${it.getParentPath()}${entry.name}"
+                    val currPath = if (entry.isDirectory) it else "${it.getParentPath().trimEnd('/')}/${entry.name}"
                     val fileDirItem = FileDirItem(currPath, entry.name, entry.isDirectory, 0, entry.size)
                     fileDirItems.add(fileDirItem)
                 }