优化

app/src/main/java/io/legado/app/ui/document/HandleFileActivity.kt

@@ -33,16 +33,14 @@ class HandleFileActivity :
 
     private val selectDocTree =
         registerForActivityResult(ActivityResultContracts.OpenDocumentTree()) { uri ->
-            uri ?: let {
-                finish()
-                return@registerForActivityResult
-            }
+            uri?.let {
                 if (uri.isContentScheme()) {
                     val modeFlags =
                         Intent.FLAG_GRANT_READ_URI_PERMISSION or Intent.FLAG_GRANT_WRITE_URI_PERMISSION
                     contentResolver.takePersistableUriPermission(uri, modeFlags)
                 }
                 onResult(Intent().setData(uri))
+            } ?: finish()
         }
 
     private val selectDoc = registerForActivityResult(ActivityResultContracts.OpenDocument()) {