Fix indexerror when trying to delete a env var that hasnt been saved to the config yet

rare/components/tabs/settings/widgets/env_vars.py

@@ -103,8 +103,12 @@ class EnvVars(QGroupBox, Ui_EnvVars):
 
         if key_item is not None and not key_item.text():
             list_of_config_keys = list(self.core.lgd.config[f"{self.app_name}.env"].keys())
+            try:
+                config_helper.remove_option(f"{self.app_name}.env", list_of_config_keys[row])
+            except IndexError:
+                # Item hasnt been saved to the config yet.
+                pass
             self.env_vars_table.removeRow(key_item.row())
-            config_helper.remove_option(f"{self.app_name}.env", list_of_config_keys[row])
             return
 
         # get all config keys