OptionsDialog: Don't validate empty paths

Author: Gatsik

src/util/settings_menus.py

@@ -554,23 +554,23 @@ def validate_data_paths(self) -> bool:
             "3. It doesn't end with slash ('/') or ('\\')\n\n"
             "{path}"
         )
-        if not validate_game_path(self.editFAPath.text()):
+        if self.editFAPath.text() and not validate_game_path(self.editFAPath.text()):
             QMessageBox.critical(
                 self,
                 "Invalid Path",
                 suggestion.format(path_type="Game", path=self.editFAPath.text()),
             )
             self.tabSelection.setCurrentRow(self.Tabs.FORGED_ALLIANCE)
             return False
-        if not validate_path(self.editDataPath.text()):
+        if self.editDataPath.text() and not validate_path(self.editDataPath.text()):
             QMessageBox.critical(
                 self,
                 "Invalid Path",
                 suggestion.format(path_type="Data", path=self.editDataPath.text()),
             )
             self.tabSelection.setCurrentRow(self.Tabs.FORGED_ALLIANCE)
             return False
-        if not validate_path(self.editVaultPath.text()):
+        if self.editVaultPath.text() and not validate_path(self.editVaultPath.text()):
             QMessageBox.critical(
                 self,
                 "Invalid Path",